How much heat does a SAM Solar Air Heater produce?
We are pleased to share some of this winter’s data logging with you, to allow you to see what GES has achieved in way of heating with Solar.
Below you can see the data logged temperatures for GES’ 4 SAM Solar Heating and Ventilation Test system in Surrey Hills, Melbourne, VIC during the week of winter solstice:
Solar Air Heating System Temperatures
Please notice that different fan types and power sources were tested during this period, to enable us to evaluate the impact of higher airflow on total heat production. This is reflected in higher temperature fluctuation than would be seen for a “static” system.
Solar Heating Performance – Heat Output for Solar Air Heating System
Below you can see the data logged temperatures i.e. the solar heating performance for GES’ 4 SAM Solar Heating and Ventilation Test system in Surrey Hills, Melbourne, VIC during the week of winter solstice:
Humidity of incoming air – Drying effect
Below you can see the data logged relative humidity for GES’ 4 SAM Solar Heating and Ventilation Test system in Surrey Hills, Melbourne, VIC during the week of winter solstice:
The impact of warm dry air is often ignored or vastly underestimated. Read more below to appreciate the benefits of ventilating with dry warm air.
From the above you can see that solar heat production from a solar heating ventilation system depends mainly on the solar irradiation available and the efficiency of the system. The conversion from available energy from the sun to solar heat is far higher than what can be achieved when converting energy to electricity.
As outlined in our SAM brochure, temperatures in the SAM collector and the air supplied into the house will vary between systems. The main factors for the SAM collector temperature are the fan speed and number of collectors in the solar heating system.(i.e. the time the air spends in the collector). Temperature loss in the ducting obviously depends on the quality and length of the ducting.
otal solar heat production is basically a result of the temperature rise produced in the solar air heater, less the heat lost in the transfer multiplied by the volume of heated air delivered into the building.
Dehumidification Effect from SAM Solar House Ventilation System
Although the SAM Solar House Heating and Ventilation system is not a dehumidifier in the conventional sense – it supplies warm and dry air into the building which reduces the amount of moisture accumulated in the building by supplying fresh air with very low relative humidity into the building. This creates a slight positive pressure, which pushes moist and stale air out of the building resulting in ventilation and a dehumidifying effect and a healthy, comfortable indoor climate. Reducing moisture in the building also boosts the performance of other heating systems – as less energy is required to heat or maintain temperatures in the building – as less energy is used to evaporate moisture before effective heat contribution can take place.
For the same reasons SAM is obviously also great for Solar Drying Rooms or Solar Drying Cupboards.