Instrumentation: [Weekly Question] Week 36 of 2011: What requirements must be met when using water heating?
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This post was last edited by narshi on 2012-12-1 17:52. Topic: What requirements must be met when using water for heating? Hint: 1) The pipes used for hot water heating should be supplied with gas separately, and the heating systems should not be connected in series； 2) An exhaust device should be installed at the gas collection point of the accompanying pipe ； 3) The connection of the accompanying pipe should be welded, it should be able to expand and contract freely, and the fixation should not be too tight. The water connection point should be at the bottom of the hot water pipe
1) Hot water tracing pipes should be supplied with gas separately, and tracing systems should not be connected in series； 2) An exhaust device should be installed at the gas collection point of the accompanying pipe ； 3) The connection of the accompanying pipe should be welded, it should be able to expand and contract freely, the fixation should not be too tight, and the water connection point should be at the bottom of the hot water pipe.
This post was last edited by denghl on 2012-12-21 at 21:50: 1) Hot water tracing pipes should be supplied with gas separately, and tracing systems should not be connected in series； 2) An exhaust device should be installed at the gas collection point of the accompanying pipe ； 3) The connection of the accompanying pipe should be welded; it must be able to expand and contract freely, and the fixation should not be too tight. The water connection point should be at the bottom of the hot water pipe. .
This post was last edited by denghl on 2012-12-21 at 21:51: 1) Hot water tracing pipes should be supplied with gas separately, and tracing systems should not be connected in series； 2) An exhaust device should be installed at the gas collection point of the accompanying pipe ； 3) The connection of the accompanying pipe should be welded, it must be able to expand and contract freely; the fixation should not be too tight, and the water connection point should be located at the bottom of the hot water pipe
1. The heat tracing pipeline should not exceed 50 meters. 2. Install heat tracing stations for the supply water and return water. 3. There should be a vent valve. 4. There should be a drain valve
This post was last edited by denghl on 2012-12-21 at 21:52. Reply 1# Baghdad: 1) Hot water tracing pipes should be supplied with gas separately, and the tracing systems should not be connected in series； 2) An exhaust device should be installed at the gas collection point of the accompanying pipe ； 3) The connection of the accompanying pipe should be welded, it should be able to expand and contract freely, the fixation should not be too tight, and the water connection point should be at the bottom of the hot water pipe.
There should be exhaust valves and drain valves, as well as anti-freezing measures
The heat tracing pipes for each branch pipe should run in a straight line as much as possible to reduce pressure losses of hot water during transportation. The lengths of the various heat tracing branch pipelines should be roughly equal, generally not exceeding 50 M.
This post was last edited by denghl on 2012-12-21 at 21:53. Reply 1# Baghdad 1: The heating pipes should be supplied with water separately, and the heating systems should not be connected in series； 2 At the gas collection point of the accompanying pipe, there should be an exhaust device ； 3 The connection of the accompanying pipes should be welded, allowing for free expansion and contraction; the fixation should not be too tight. The water connection point should be at the bottom of the hot water pipe.
Quoting Haiyou “Plum Blossoms in Fragrance” http://bbs.hcbbs.com/space.php?uid=314122 HG/T 20514-2000 “Specifications for the Design of Heating and Insulation of Instrument Piping” ... 2. Hot water heating shall be used in cases that meet one of the following conditions: 2.1 Detection systems for which steam heating is not suitable； 2.2 In the absence of a steam heat source. Water-based heat tracing has high initial installation costs, but is cost-effective once in use; however, it offers a limited temperature control range and is suitable for short-distance, small-scale applications. Considering devices with a slight surplus of thermal energy in the long term is also a good option. However, the best option is steam tracing.
2.2 In the absence of a steam heat source. Water-based heat tracing has high initial installation costs, but is cost-effective once in use; however, it offers a limited temperature control range and is suitable for short-distance, small-scale applications. Long-term considerations for devices with a slight surplus of thermal energy are also