The importance of stability as a limit to good control is emphasised. A new first order model of the thermal response of a room is developed suitable for stability calculations. It emphasises the importance of separating radiant and convective paths in the block diagram of the heating system.
Get full access to this article
View all access options for this article.
References
1.
1 Jacobs, O. L. R., Introduction to control theory. O.U.P. (1974).
2.
2 Bloomfield, D. P. and Fisk, D. J., Thermal control of building environments. Inst. Maths, and its Applications Symposium ‘Environment inside buildings’ (May 1979).
3.
3 Danter, E., Heat exchanges in a room and the definition of room temperature, BRE, CP18/75 (1975).
4.
4 Bloomfield, D. P., The effect of intermittent heating on surface temperatures in rooms, BRE, CP8/76 (1976).
5.
5 Humphreys, M. A., The optimum diameter for a globe thermometer for use indoors, BRE, CP8/78 (1978).
6.
6 Hanby, V. I., The stability of proportionally controlled heating systems. Bdg. Serv. Eng., 43, 208–211 (1976).
7.
7 Fisk, D. J., Control of domestic heating. BRE News46, 4–5 (1978).
8.
8 Milbank, N. O. and Harrington-Lynn, J., Thermal response and the admittance procedure. BRE, CP61/74 (1974).
