© Helderberg Solar Energy (Pty) Ltd - 2019   |  Disclaimer  |  Privacy Policy  |  Terms of Use  |

Helderberg Solar Energy

The   solar   energy   market   in   South   Africa   is   changing   rapidly   and   the   economic value   of   energy   consumption   and   the   use   of   renewable   energy   is   becoming more and more feasible. Helderberg   Solar   Energy   is   a   renewable   energy   company that      specialises     in     lowering     the     cost     of     energy     for Commercial    and    Residential    applications    by    using    the latest innovations in green technology. We    supply    and    install    PV    (Photovoltaic)    Systems,    Wind Turbines,   Low   Energy   (LED)   Lighting,   Solar   Geysers,      Heat Pumps,    Pool    Heat    Pumps,    Solar    Borehole    Pumps,    Solar Gate Control and Solar Security Systems (CCTV & Perimeter Sensors). Helderberg   Solar   Energy   value   our   customers   and   is   proud   to   stand   out   as   a   pioneer   in   the   renewable   energy   industry as far as technical knowledge, after sales service and maintenance is concerned.

What is a heat pump?

A    heat    pump    is    a    very    efficient    water    heating    device.    It    uses    a    small    amount     of electricity to produce up to four times more heat energy. By   connecting   a   heat   pump   to   your   existing   hot   water   cylinder   you   can   divide   your   hot water electrical consumption by four. Unlike   a   solar   geyser,   a   heat   pump   is   not   directly   dependant   on   the   sun   and   therefore   it can   operate   day   and   night,   winter   and   summer,   ensuring   a   major   saving   in   producing   hot water 24/7.

How long have heat pumps been around?

Heat pumps have been around for decades and are very widely used in Europe for central heating systems. Some   of   the   hostels   at   Stellenbosch   University   in   the   Western   Cape   for   example   have   used   heat   pumps   for   hot   water for more than 25 years. Their   popularity   has   increased   drastically   due   to   the   increase   in   the   price   of   electricity   in   recent   years   and   this increase in demand has decreased the price considerably.

How does a heat pump work?

A   heat   pump   works   like   an   air   conditioning   unit   in   reverse.   It   extracts   heat   from   the   ambient   air   surrounding   it, enabling it to heat the refrigerant which is then compressed causing it to get even hotter. This   is   then   run   through   a   heat   exchanger   where   the   energy   is   drawn   off   to   heat   the   water   and   then   the   refrigerant   is allowed to expand again, thus cooling it down and enabling it again to absorb heat from the surrounding air. Electricity is only used to run a fan and compressor and the heat energy is provided indirectly by the sun.
“Clubbing   energy   efficiency   with   renewable   energy   will   give   us   the   much-needed   window   to   incubate   the   renewable   energy sector, particularly large solar, without having to increase the price of electricity.” Jamshyd Godrej
Renewable Energy Solutions to save Earth for our Children
“The   cost   of   renewable   energy   is   largely   a   function   of   initial   investment   cost....   Once   a   renewable   energy   facility   is   built,   at   least with   fixed-rate   financing,   the   cost   of   power   from   that   facility   is   fixed   throughout   its   lifetime.   Not   so   for   fossil   fuels,   where   the cost of power will vary in the future with fuel prices.” Jose Amaya

Heat Pump & Solar System Savings

The   popularity   of   renewable   energy   technology   for   water   heating   has   sharply   increased   with   the   increasing   awareness of sustainable living and the ever increasing cost of electricity. However,   as   with   many   products   on   the   market,   one   can   find   considerably   contradicting   claims   with   regards   to   the different   technologies   used   for   water   heating.   Many   of   these   claims   and   advertisements   are   nothing   more   than marketing “scams” and have no facts behind them. We   would   like   to   equip   our   readers   with   as   much   factual   information   as   possible   to   be   able   to   make   an   informed decision,   specifically   taking   in   consideration   the   possible   savings   and   ROI   of   solar   water   heaters,   hot   water   heat pumps, PV systems or other renewable energy options available.
Request a Quote Request a Quote

What is a solar water heater?

A solar water heater (SWH) uses energy from the sun to heat water. It works on two basic principles. Firstly,   when   water   gets   hot   it   rises   due   to   density   differences   between   hot   and cold water (thermosiphon effect). Secondly, black objects absorb heat. A   solar   water   heater   collects   heat   from   sunlight   and   irradiation   through   the   solar collector and transfer that heat to water, which is then stored in a geyser or tank. Solar    geyser    systems    comprise    of    two    or    three    main    parts:    the    collector,    an energy transfer fluid (frost areas) and the storage tank. For   low-income   households   who   do   not   have   an   electrical   geyser,   the   technology   offers   important   health   and   quality of life benefits.

Collector

The   solar   collector   absorbs   solar   radiation   and   transfers   the   energy,   in   the   form   of heat, to the fluid within it. The   solar   collector   is   generally   a   flat   plat   or   an   evacuated   tube   collector.   More   basic systems may be a coil of black pipe within a box or similar.

Transfer Fluid

This   is   the   heat   transfer   medium.   In   a   direct   system   (frost   free   areas),   the   transfer medium is the potable water from the storage container. In   an   indirect   system,   the   transfer   fluid   is   generally   a   mix   of   water   and   glycol,   which passes heat energy to the storage container via an isolating heat exchanger. In areas in South Africa where temperatures drop below freezing, an indirect system is the best system to use.

Storage Tank

As   with   a   conventional   geyser,   the   hot   water   storage   container   is   thermally   insulated   to   retain   heat.   Solar   geysers are better insulated than electric geysers. This allows for the maximisation of solar gains. Solar   water   heaters   are   classified   as   either   active   or   passive   systems.   An   active   system   uses   a   pump   to   circulate   the fluid/water between the collector and the storage tank. A   passive   system   uses   natural   convection   (thermosiphon)   to   circulate   the   fluid/water   between   the   collector   and   the storage tank. For   low-income   households   who   do   not   have   an   electrical   geyser,   the   technology   offers   important   health   and   quality of life benefits.
Click Here For
© Helderberg Solar Energy (Pty) Ltd - 2019   |  Disclaimer  |  Privacy Policy  |  Terms of Use  |

Helderberg Solar Energy

The   solar   energy   market   in   South   Africa   is   changing   rapidly   and   the economic         value         of         energy consumption      and      the      use      of renewable      energy      is      becoming more and more feasible. Helderberg      Solar      Energy      is      a renewable   energy   company   that   specialises   in   lowering   the   cost   of energy    for    Commercial    and    Residential    applications    by    using    the latest innovations in green technology. We   supply   and   install   PV   (Photovoltaic)   Systems, Wind   Turbines,   Low   Energy   (LED)   Lighting,   Solar Geysers,      Heat   Pumps,   Pool   Heat   Pumps,   Solar Borehole   Pumps,   Solar   Gate   Control   and   Solar Security Systems (CCTV & Perimeter Sensors). Helderberg   Solar   Energy   value   our   customers and   is   proud   to   stand   out   as   a   pioneer   in   the renewable   energy   industry   as   far   as   technical   knowledge, after sales service and maintenance is concerned.

What is a heat pump?

A   heat   pump   is   a   very   efficient   water   heating      device.      It      uses      a      small amount    of    electricity    to    produce    up to four times more heat energy. By   connecting   a   heat   pump   to   your existing    hot    water    cylinder    you    can divide      your      hot      water      electrical consumption by four. Unlike   a   solar   geyser,   a   heat   pump   is   not   directly   dependant   on   the sun   and   therefore   it   can   operate   day   and   night,   winter   and   summer, ensuring a major saving in producing hot water 24/7.

How long have heat pumps been around?

Heat   pumps   have   been   around   for   decades   and   are   very   widely   used in Europe for central heating systems. Some   of   the   hostels   at   Stellenbosch   University   in   the   Western   Cape for   example   have   used   heat   pumps   for   hot   water   for   more   than   25 years. Their   popularity   has   increased   drastically   due   to   the   increase   in   the price   of   electricity   in   recent   years   and   this   increase   in   demand   has decreased the price considerably.

How does a heat pump work?

A   heat   pump   works   like   an   air   conditioning   unit   in   reverse.   It   extracts heat   from   the   ambient   air   surrounding   it,   enabling   it   to   heat   the refrigerant which is then compressed causing it to get even hotter. This    is    then    run    through    a    heat    exchanger    where    the    energy    is drawn   off   to   heat   the   water   and   then   the   refrigerant   is   allowed   to expand   again,   thus   cooling   it   down   and   enabling   it   again   to   absorb heat from the surrounding air. Electricity   is   only   used   to   run   a   fan   and   compressor   and   the   heat energy is provided indirectly by the sun.
“Clubbing   energy   efficiency   with   renewable   energy   will   give   us   the   much- needed    window    to    incubate    the    renewable    energy    sector,    particularly large solar, without having to increase the price of electricity.” Jamshyd Godrej
Renewable energy solutions to save Earth for our Children
Request a Quote Request a Quote

What is a solar water heater?

A   solar   water   heater   (SWH)   uses    energy from   the   sun   to   heat   water.   It   works   on two basic principles. Firstly,   when   water   gets   hot   it   rises   due to   density   differences   between   hot   and cold       water       (thermosiphon       effect). Secondly, black objects absorb heat. A   solar   water   heater   collects   heat    from sunlight   and   irradiation   through   the   solar collector   and   transfer   that   heat   to   water, which is then stored in a geyser or tank. Systems   comprise   of   three   main   parts:   the collector,    an    energy    transfer    fluid    (frost areas) and the storage tank.

Collector

The   solar   collector   absorbs   solar   radiation   and   transfers   the   energy, in the form of heat, to the fluid within it. The   solar   collector   is   generally   a   flat   plat   collector   or   an   evacuated tube   collector.   More   basic   systems   may   be   a   coil   of   black   pipe   within a box or similar

Transfer Fluid

This   is   the   heat   transfer   medium.   In   a   direct   system   (frost   free   areas), the     transfer     medium     is     the     potable     water     from     the     storage container. In   an   indirect   system,   the   transfer   fluid   is   generally   a   mix   of   water and   glycol,   which   passes   the   energy   to   the   storage   container   via   an isolating heat exchanger. In   areas   in   South   Africa   where   temperatures   drop   below   freezing,   an indirect system is the best system to use.

Storage Tank

As   with   a   conventional   geyser,   the   hot   water   storage   container   is thermally   insulated   to   retain   heat.   Solar   geysers   are   better   insulated than   electric   geysers.   This   allows   for   the   maximisation   of   the   solar gains. Solar   water   heaters   are   classified   as   either   active   or   passive   systems. An   active   system   uses   a   pump   to   circulate   the   fluid/water   between the collector and the storage tank. A     passive     system     uses     natural     convection     (thermosiphon)     to circulate the fluid/water between the collector and the storage tank. For   low-income   households   who   do   not   have   an   electrical   geyser, the technology offers important health and quality of life benefits.
Click Here For

Heat Pump & Solar System Savings

The   popularity   of   renewable   energy   technology   for   water   heating has   sharply   increased   with   the   increasing   awareness   of   sustainable living and the ever increasing cost of electricity. However,    as    with    many    products    on    the    market,    one    can    find considerably    contradicting    claims    with    regards    to    the    different technologies    used    for    water    heating.    Many    of    these    claims    and advertisements   are   nothing   more   than   marketing   “scams”   and   have no facts behind them. We     would     like     to     equip     our     readers     with     as     much     factual information   as   possible   to   be   able   to   make   an   informed   decision, specifically   taking   in   consideration   the   possible   savings   and   ROI   of solar   water   heaters,   hot   water   heat   pumps,   PV   systems   or   other renewable energy options available.
© Helderberg Solar Energy (Pty) Ltd - 2019   |  Disclaimer  |  Privacy Policy  |  Terms of Use  |

How does a heat pump work?

A    heat    pump    works    like    an    air    conditioning unit    in    reverse.    It    extracts    heat    from    the ambient   air   surrounding   it,   enabling   it   to   heat the     refrigerant     which     is     then     compressed causing it to get even hotter. This    is    then    run    through    a    heat    exchanger where    the    energy    is    drawn    off    to    heat    the water   and   then   the   refrigerant   is   allowed   to expand     again,     thus     cooling     it     down     and enabling    it    again    to    absorb    heat    from    the surrounding air. Electricity    is    only    used    to    run    a    fan    and compressor   and   the   heat   energy   is   provided indirectly by the sun.
“Clubbing     energy     efficiency     with     renewable energy   will   give   us   the   much-needed   window   to incubate       the       renewable       energy       sector, particularly      large      solar,      without      having      to increase the price of electricity.” Jamshyd Godrej
Renewable energy solutions to save Earth for our Children
Request a Quote Request a Quote

What is a heat pump?

A   heat   pump   is   a   very   efficient   water   heating device.   It   uses   a   small   amount   of   electricity   to produce up to four times more heat energy. By   connecting   a   heat   pump   to   your   existing hot    water    cylinder    you    can    divide    your    hot water electrical consumption by four. Unlike    a    solar    geyser,    a    heat    pump    is    not directly   dependant   on   the   sun   and   therefore   it can     operate     day     and     night,     winter     and summer,   ensuring   a   major   saving   in   producing hot water 24/7.

Storage Tank

As   with   a   conventional   geyser,   the   hot   water storage    container    is    thermally    insulated    to retain   heat.   Solar   geysers   are   better   insulated than     electric     geysers.     This     allows     for     the maximisation of the solar gains. Solar    water    heaters    are    classified    as    either active    or    passive    systems.    An    active    system uses     a     pump     to     circulate     the     fluid/water between the collector and the storage tank. A     passive     system     uses     natural     convection (thermosiphon)    to    circulate    the    fluid/water between the collector and the storage tank. For   low-income   households   who   do   not   have an    electrical    geyser,    the    technology    offers important health and quality of life benefits.
Click Here For

Helderberg Solar Energy

The    solar    energy    market    in    South    Africa    is changing    rapidly    and    the    economic    value    of energy   consumption   and   the   use   of   renewable energy is becoming more and more feasible. Helderberg   Solar   Energy   is   a   renewable   energy company   that   specialises   in   lowering   the   cost of    energy    for    Commercial    and    Residential applications   by   using   the   latest   innovations   in gr een technology. We     supply     and     install     PV     (Photovoltaic) Systems,    Wind    Turbines,    Low    Energy    (LED) Lighting,    Solar    Geysers,        Heat    Pumps,    Pool Heat    Pumps,    Solar    Borehole    Pumps,    Solar Gate   Control   and   Solar   Securi ty   Systems   (CCTV & Perimeter Sensors). Helderberg      Solar      Energy value   our   customers   and   is proud    to    stand    out    as    a pioneer    in    the    renewable energy    industry    as    far    as technical    knowledge,    after sales service and maintenance is concerned.
Heat Pump & Solar System Savings The popularity of renewable energy technology for water heating has sharply increased with the increasing awareness of sustainable living and the ever increasing cost of electricity.  However, as with many products on the market, one can find considerably contradicting claims with regards to the different technologies used for water heating. Many of these claims and advertisements are nothing more than marketing “scams” and have no facts behind them.  We would like to equip our readers with as much factual information as possible to be able to make an informed decision, specifically taking in consideration the possible savings and ROI of solar water heaters, hot water heat pumps, PV systems or other renewable energy options available.

What is a solar water heater?

A   solar   water   heater   (SWH)   uses   energy   from the   sun   to   heat   water.   It   works   on   two   basic princi ples. Firstly,    when    water    gets    hot    it    rises    due    to density     differences     between     hot     and     cold water    (thermosiphon    effect).    Secondly,    black objects absorb heat. A     solar     water     heater     collects     heat     from sunlight    and    irradiation    through    the    solar collector    and    transfer    that    heat    to    water, which is then stored in a geyser or tank. Systems    comprise    of    three    main    parts:    the collector,   an   energy   transfer   fluid   (frost   areas) and the storage tank.

Collector

The   solar   collector   absorbs   solar   radiation   and transfers   the   energy,   in   the   form   of   heat,   to the fluid within it. The    solar    collector    is    generally    a    flat    plat collector   or   an   evacuated   tube   collector.   More basic    systems    may    be    a    coil    of    black    pipe within a box or similar.

Transfer Fluid

This   is   the   heat   transfer   medium.   In   a   direct system   (frost   free   areas),   the   transfer   medium is     the     potable     water     from     the     storage container. In    an    indirect    system,    the    transfer    fluid    is generally    a    mix    of    water    and    glycol,    which passes   the   energy   to   the   storage   container   via an isolating heat exchanger. In   areas   in   South   Africa   where   temperatures drop   below   freezing,   an   indirect   system   is   the best system to u se.

How   

long   

have   

heat   

pumps   

been

around?

Heat    pumps    have    been    around    for    decades and   are   very   widely   used   in   Europe   for   central heating systems. Some   of   the   hostels   at   Stellenbosch   University in   the   Western   Cape   for   example   have   used heat   pumps   for   hot   water   for   more   than   25 years. Their   popularity   has   increased   drastically   due to    the    increase    in    the    price    of    electricity    in recent   years   and   this   increase   in   demand   has decreased the price considerably.