| 摘要 |
<p>A central heating system composed of a central steam source and a plurality of water systems located in every living spaces of a building or buildings respectively. The system has many water systems established in every living spaces respectively, each of which comprises at least one steam-to-water heat exchanger having a heat exchanger interior condition control means, at least one water circulating pump having at least one room temperature control means. A packaged unit is provided in accordance with the system for easy construction of the system comprising said steam-to-water heat exchanger and said water circulating pump.</p> |
