A large number of air-conditioned office blocks constructed in recent years in the FRG have been equipped with waste-air ventilated windows. Based on experience now available from planning, laboratory tests and practical operation, describes the different design principles and their technical characteristics. Bases the evaluation on window designs which have been used in 11 office buildings totalling 10000sq.m useful floor area.
Presents a mathematical model of the formaldehyde concentrations in rooms containing particle boards with known emission rates of formaldehyde. Tests the model in 3 rooms in a new house. Finds agreement within +-15% between calculated and measured formaldehyde concentrations in the rooms before painting and without furniture, carpets etc. Concludes that the combined mathematical model and the analytical method may be suitable for the classification of particle boards according to their emission of formaldehyde and for predictions of formaldehyde concentrations in the indoor environment.
Describes intiatives made in North America to reduce energy consumption in buildings. Most energy utilities finance energy efficiency improvements on their customers premises. Reports on super-insulated housing and how this type of construction is being implemented in Canada.
Discusses the advantages of reducing air infiltration in industrial buildings in terms of energy conservation. States that heat loss due to infiltration is often underestimated or ignored as it is difficult to measure. Concentrates ondoorways as a major source of infiltration, and shows that the type of door used needs to match the requirements of the entrance, such as type and size of vehicle passing etc. Decribes a range of doors suitable for different conditions.
Indoor air quality is determined by the sources of the contaminants and the methods used to control their concentrations. To predict the quality of air, algorithms are needed to model the rates of generation, transfer and removal of contamina
Airflow window units are a combination of energy efficient fenestration and adjustable shading device, consisting of a double-glazed outer sash and a single-glazed inner sash, with venetian or louvered blinds in between. Space air is admitted
Develops a calculation procedure to predict the room air temperature and heat load of Japanese housing. Includes the process to calculate natural ventilation precisely. Predicts the room air temperatures of 2 experimental houses using this method. Finds that the prediction agrees well with actual measurements.
Describes energy measurements carried out on 6 detached single family low-energy houses in Hjortekaer, 1979-1980. Discusses a few typical construction details, to illustrate solutions to the problem of cold bridges and to demonstrate ways of obtaining air tight constructions. Measures the achby the tracer gas decay method, showing results ranging from 0.02-0.12 ach. Correlates these with pressurization tests also made. By means of regression analysis of thermal calibration data tests 3 different models for heat loss equations.
Tests and evaluates the air infiltration control methods employed in buildings. Concentrates especially on silicone sealant applied in situ to opening joints of external windows. Carries out tests both in the laboratory on window samples and in the field on a test building. Checks the effect of the method on air permeability through single windows and on energy loss due to air infiltration through the building envelope.
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