供暖、通风、，在历史建筑和其他重量级建筑中提供受控内部条件的空调（HVAC）系统不仅需要了解系统在快速有效地提供所需条件方面的有效性，还需要了解系统的长期影响以及内部条件对建筑结构和建筑工程寿命的突然波动艺术在英国和其他北欧国家，教堂和类似的历史建筑只是间歇性地加热，以便在服务和其他功能期间为会众提供可接受的条件。本文报道了英国市教堂中两种最常见的供暖系统的研究结果:传统胡式热水散热器系统和直接燃气强制对流系统。这两种系统在保持可接受环境条件的能力方面进行了比较，对建筑结构的影响最小。 单元:科学:研讨会，ASHRAE交易，第106卷，第页。1.

The selection and control of heating, ventilating, and air-conditioning (HVAC) systems to provide controlled internal conditions in historic and other heavyweight buildings requires knowledge not only of the effectiveness of the systems in providing the required conditions quickly and efficiently but also on the long-term effects of the system and the sudden fluctuations of the internal conditions on the life of the building fabric and works of art. In the U.K. and other northern European countries, churches and similar historic buildings are only heated intermittently to provide acceptable conditions for the congregation during services and other functions. This paper reports results from the study of two of the most common types of heating system in churches in the U.K. — the conventional hot water radiator system and a direct gas-fired forced convection system. The two systems are compared in terms of their ability to maintain acceptable environmental conditions with minimum impact on the building fabric.Units: SI