A fresh look at the building heat loss calculation.

Examines the fundamental building heat loss calculations. Points out some anomalies in the traditional view of room thermal behaviour. Treats equations governing room heat loss taking account of the temperature of the walls and the environmental temperature. Justifies the use of the environmental temperature rather then the air temperature. Examines the heat loss due to ventilation. Discusses the use of the temperature ratio.

Energy saving methods of ventilation in domestic buildings. Energiesparende Luftungsmabnahmen in Wohngebauden.

Improved insulation of domestic buildings has resulted in ventilation heat loss forming a large part of the total heat loss. Estimates show that energy consumption in the Federal Republic of Germany could be reduced by ventilating design methods eg by economical ventilating systems suitably adapted to theheating installations. A number of technical facilities exist for the utilisation of this potential, which at the same time maintain the necessary requirements for indoor climate.

Algorithms to determine the altitude correction factors in Standard DIN 4701. Algorithmen zur Ermittlung der Hohenkorrekturfactoren in DIN 4701.

In future, high altitude correction factors will be considered in computing the ventilation heat load in high rise buildings. The algorithms necessary for the calculation are deducted and stated by the author.

Air change measurements in non-air conditioned rooms and the influence of building and climate parameters.Report 1. Luftwechselmessungen in nichtklimatisierten Raumen unter dem Einfluss von Konstruktions-und Klimaparametern. Bericht 1.

Presents the first of two sections of report 34020, detailing measurements carried out over the winter period of 1975/76 in Swiss dwellings with mainly hot water heating and some extract ventilation in kitchens and bathrooms. The aim of the research was to obtain a general picture of air change conditions in typical Swiss dwellings and to determine the effect of influencing parameters. The overall aim was to take a step towards the establishment of more surely founded rules of calculating ventilation heat loss as a function of influencing parameters.

Long term investigations concerning air permeability and air exchange of a single family house. Langzeit-untersuchungen betreffend luftdurchlassigkeit und luftwechsel eines einfamilienhauses

Provides a summary of Report IIIc of the overall research project `air change in buildings' undertaken by the EMPA, Switzerland, sponsored by the Swiss Federal Ministry for Environmental Protection. Describes a measurement programme undertaken in an unoccupied single family house built in 1979.

Current knowledge concerning ventilation heat losses. Aktueller stand der kenntnisse - luftungswarme-verluste

Treats the three main factors contributing to ventilation heat loss- natural air exchange driven by wind pressure and temperature differences, air exchange caused by the user and forced air change under the influence of exhaust air installati

Detailed investigations of ventilation heat losses of non air-conditioned buildings. Detailuntersuchungen der luftungsverluste nichtklimatisieter bauten

Notes research carried out over the last five years in the EMPA sponsored by the Swiss Federal Ministry for Environmental Protection. The aim of the investigation is to elaborate appropriate guidelines for the construction of the building envelope and to develop appropiate guidelines for the construction of the building envelope and to develop appropriate calculation methods for ventilation heat losses. Discusses the main approaches of the various investigations. Gives a brief outline of the individual stages of the research in the EMPA in recent years.

Domestic ventilation. Luftung von wohnbauten.

Makes general suggestions for future buildings and their ventilation methods with the aim of creating improvements to avoid the faulty design of the 1960's with their high energy consumption. Considers the characteristics of natural ventilation and mechanical ventilation with respect to ventilation heat loss. Recommends the use of `ventilation on demand' for bathrooms, w.c.'s and kitchens using individual extract ventilation units for each room.

A method for the calculation of the improvement in thermal insulation provided by ventilated, as compared to unventilated, windows. Metod teplotekhnicheskogo rascheta ventiliruemykh okon.

An effective way of reducing the transmission flows through windows during the heating season is to use the air extracted from the room to ventilate the air space between the glazings. The heat transmission coefficient of a ventilated window is between two thirds and one third of that of an unventilated window, and the infiltration heat loss is less. Proposes analytical dependencies and graphs for the determination of the heat transfer coefficient and the temperatures of the panes as a function of the window construction and the heat transfer intensity.