HVAC Energy Consumption – Optimum Energy Efficiency Management

HVAC Energy Efficiency
HVAC (heating, ventilation, and air-conditioning) systems vary depending on the complexity of room units size from single rooms to large systems, central control, which serves several areas of a building. In large, modern office buildings with heat gains from lights, people and equipment, interior spaces often require constant cooling. Rooms within the building itself (rooms with exterior walls, ceilings or roofs), it may be necessary to heat and / or cooled the weather conditions change hourly or daily outside. In buildings over one story in height, perimeter zones in the lower levels tend to be the penetration of air infiltration without so much control. (more…)

Climate Trends: Warming Trends and Variations

Climatologists generally agree that there is accumulating evidence that a warming trend has been occurring since the mid-1960s. There are rather distinct seasonal and regional climate variations in the lower 48 states of the United States. Livezey and Smith determined that the average national warming trend has been 0.0151F per year. Since 1964, this implies that average annual temperature has increased by approximately one-half of one degree. (more…)

Climate Impacts on Energy Demand

climate changes energy
Energy is consumed by various segments of the economy, including households, commercial establishments, manufacturing enterprises, and electric power generators. Only a portion of total energy demand is sensitive to temperature changes. (more…)

Climate Change Renewable Energy Demand & Consumption

Establishing the impact of climate change on energy demand requires a measure of heating and cooling requirements. In the United States, this measure is a degree day, which is defined in terms of an absolute difference between average daily temperature and 651F, which is an arbitrary benchmark for household comfort. Commercial heating degree days are incurred when outside temperatures are below 651F, generally during the winter heating season from October through March. (more…)

Numerical Simulation of Climate Impacts

To determine the effects of past climate trends on global energy consumption, the econometric equations providing the degree day elasticities reported previously are combined into an econometric simulation model. The endogenous variables determined by the model include energy demand in the residential, commercial, and industrial sectors of the U.S. economy and the derived demand for primary fuels used in electric power generation. (more…)