ECO-FRIENDLY HEATING SYSTEMS
SOLAR WATER HEATERS :
Did you know that the sun provides almost 173,000 Terawatts of energy continuously. We can utilize this energy in making solar heaters depending on the building site, efficacy and cost of solar heating apparatus.
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Solar water heaters are used to heat and store hot water and then use it throughout the day. An insulated tank is used to store the hot water for use. They consist of glass tubes in which cold water is supplied at the bottom end. As the water gets heated from the solar energy, it loses its density and rises towards the top, where it is stored in a tank and then pumped out throughout the day for use. They usually contain a tankless heater to supplement this supply in case of excess demand.
Solar water heaters can save approximately 50 - 80 % on heating bills throughout the lifetime of the heating system.
REFRIGERANT HEAT RECOVERY HEATER :
We all know that refrigeration systems work by removing heat from one space and hence ensuring the cooling in that area. This heat removed from the space is dumped in the atmosphere. Refrigerant heat recovery systems aim to use this waste heat to warm the water for delivery.
These systems also contain provision for electric heaters as a precaution, but still manage savings of up to 50 %.
Heat exchangers are installed at the condensers of the HVAC systems. When the system runs, waste heat from the evaporator units indoors gets transferred to the condenser. When cold water flows in the heat exchanger, it gets heated and then stored for future use.
Since hot water is only heated when the system runs, it is advisable to install these in places where the cooling apparatus operates for a majority of the time; like malls, restaurants, schools etc.