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Snowfall can be moderate, or considerably high during the winter. Almost every year, Virginia receives snow during December, and every year in January-February. In the summer, temperatures are hot and humid. Precipitation is slightly greater. Temperatures are not extreme, ranging between the high 70s and mid 90s; but humidity can make it feel ...
A number of homes and small apartment buildings have demonstrated combining a large internal water tank for heat storage with roof-mounted solar-thermal collectors. Storage temperatures of 90 °C (194 °F) are sufficient to supply both domestic hot water and space heating. The first such house was MIT Solar House #1, in 1939.
For example, a conventional heat pump system used to heat a building in Montana's −57 °C (−70 °F) low temperature or cool a building in the highest temperature ever recorded in the US—57 °C (134 °F) in Death Valley, California, in 1913 would require a large amount of energy due to the extreme difference between inside and outside air ...
Prevent hot water mishaps by servicing your water heater. Flush your tank and add insulation to your pipes and tank, too. Be sure to check your water heater’s temperature, test the pressure ...
According to the U.S. Department of Energy, setting your thermostat back 10 to 15 degrees for eight hours at a time during the heating season can save you 5-15 percent in heating bills each year ...
Projected effects of climate change. "Seventy years from now, temperatures are likely to rise above 95°F approximately 20 to 40 days per year in the southeastern half of Virginia, compared with about 10 days per year today. Warmer temperatures will increase the use of air-conditioning, which will increase electricity consumption".
This temperature equates roughly to the average annual air temperature of the chosen location, usually 7–12 °C (45–54 °F) at a depth of 6 metres (20 ft) in the northern US. Because this temperature remains more constant than the air temperature throughout the seasons, ground source heat pumps perform with far greater efficiency during ...
The balance point temperature is mathematically defined as: Equation 1: tbalance = tthermostat - Q IHG + Q SOL U bldg. Where: tbalance is the balance point outdoor air temperature, given in °C (°F). tThermostat is the building thermostat set-point temperature, given in °C (°F). QIHG is the internal heat generation rate per unit floor ...