Measurement of thermal output of hot-water radiators with valves

摘要

The water heated in a boiler (11) is pumped (26) through a flowmeter (25) to the individual radiators (38) whose inlet and outlet temps. are measured (34, 35) and transmitted through interfaces (31) and a bus system (47) to a central microcomputer (40), together with ambient temp. (36) in each apartment. Water entering and returning from the pipe network is monitored by sensors of flow (21, 23) and temp. (22, 24). Simple admission valves (32) are used in a two-pipe circuit, and bypass valves (33) in a single-pipe system.