Paper 6: Some Basic Considerations in the Practice of Heating,Ventilating and Air-Conditioning

Abstract

This paper covers some of the basic considerations associated with the practice of heating, ventilating and air-conditioning in temperate climates.

A diagrammatic representation of heat loss and gain for a room appears to provide a key to more accurate forecasting of fuel consumption for whole buildings.

Further, the smaller the thermal capacity of the system and, therefore, the quicker the response rate, the larger is the possible scope for fuel savings.

As far as space heating is concerned water systems are classified and there is reference to the more commonly used heat emitters and some of their characteristics. There is some reference to boiler power both for hot-water heating and steam generation.

Ventilation is discussed in the context of terminal points; there is also a brief reference to noise attenuation in ducts and to balancing of systems.

Air-conditioning is defined and the better known distribution methods are classified. Packaged water chillers are briefly examined and there are some suggestions regarding ‘mixing-units’. In addition there are some comments on cooling towers.

In conclusion there is a plea for standardization and in this particular instance reference is made to specifications for mechanical services works.