目前有几种技术正在开发中，有可能使现有的区域供暖系统从石油或天然气转换为天然气；煤这些技术包括水煤浆（CWM）和先进的燃烧室。对于某些应用，这些技术可与先进的选煤工艺结合使用。对这些新兴技术的现状进行了描述和讨论；详细地单位:I-PCITION:研讨会，ASHRAE交易，1986年，第92卷，pt。1B，旧金山

There are several technologies currently under development that have the potential to enable existing district heating systems to be converted from oil or gas to; coal. These technologies are coal water mixtures (CWM) and advanced combustors. For certain applications, these technologies may be used in conjunction with an advanced coal preparation process.The status of these emerging, technologies is described and discussed; in detail.Units: I-P