Describes a calibration technique to relate the air flow rate through a blower door to the fan speed and pressure difference across the door. To obtain an accurate and well-documented calibration of pressurization devices, a facility was designed and constructed at the US National Bureau of Standards. This accurately determines the flow rate through the fan as a function of fan speed, air density and pressure difference across the fan.
Describes a program which enables a hand-held computer to perform the energy audit calculations used in Building Practice Note No.20 "Estimating energy savings from reinsulating houses". The computer prompts the user for information, and provides a fast and versatile way of performing energy audit calculations.
Continues on from a previous paper, which gives a theoretical framework for using moments of concentration histories as a means of assessing air quality. Gives a more detailed presentation of the test conditions and the results from each test, together with plots of concentration v.time graphs.
Describes a 2 year study sponsored by EPRI to ivestigate relationships between energy use, air infiltration and indoor air quality. Uses 2 bi-level, detached houses, identical in design and wind exposure. Continuously monitors parameters related to related to energy use, air infiltration, and indoor air quality.
Describes a model that predicts air infiltration from both wind and temperature influence to within 20%. Compares the predicted value and measured infiltration from a full-scale test structure, revealing an average discrepancy of less than 10 m3/hr (out of an average of approx 150 m3/hr). Presents direct measurements of the wind velocity and pressure coefficients induced by the wind on the full-scale test structure.
Examines the sensitivity of the predicted air infiltration rate to measured building air tightness data and the wind exposure index determined from site inspection. Presents results of air tightness tests in New Zealand houses, which indicate the range of leakage resistance for components, for solid materials (such as wall and ceiling lining materials) and for cracks separating major components such as floors and walls.
Summarizes the information obtained concerning new residential construction in the US and points out important differences between US and Swedish technology and construction methods for energy efficient housing. Selected building components for US housing are described and compared with corresponding Swedish techniques. Most important differences are -1. Differences in ventilation strategies - almost all new Swedish houses have continuous mechanical ventilaton. 2. The airtightness of building envelopes. 3. Wall constructions and standard insulation practices.
Makes a field study of energy consumption in 3 electrically heated high rise apartment buildings in Chicago, to see if stack effect causes significant variations in the heating requirements of apartments according to their location in tall buildings. The buildings have 30, 42, and 45 floors, and theheating consumption for December through March is computed and plotted against floor number. Results show that normal stack effect is suppressed in a tall apartment building when supply and exhaust fans are running.
Develops a model apartment building based upon existing surveys of such buildings and computer simulations carried out to determine the independent effects of climate and size on its energy consumption. The Meriwether Energy System Analysis program used has previously been calibrated by simulating four existing buildings of known energy consumption. From these results, develops data which enables a norm to be derived from the energy consumption of any high rise apartment building at any location in Canada.
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