Abstract
Abstract To accurately understand the insulation status of primary heating pipe network in the Chengyin District of Daqing City, its present insulation status has been tested through the enthalpy drop method. The field test results, with the data processing, are compared and analyzed, which reveals that there are weak links in the insulation structure of the primary heating pipe network in the Chengyin area. Before the insulation structure is optimized according to the field conditions, which provides a basis and reference for testing the insulation status of the heating pipe network, and has a guiding significance for evaluating and optimizing the insulation structure of pipe network.
Highlights
With the development of production and economy, the situation of energy shortage in China is becoming more and more severe
A large amount of heat energy is transmitted through the heating pipe network, in which the heat loss is comparatively large
The pipeline is being used in the heating industry on the external thermal insulation has the shortcoming, simple installation process, resulting in the actual heat preservation effect is not up to the theoretical requirements, tightness and airtightness are not up to the requirements of process piping insulation [1,2,3]
Summary
With the development of production and economy, the situation of energy shortage in China is becoming more and more severe. With the test in the insulation status of the heating pipe network for operation, evaluation in its insulation effect and optimization for its insulation structure, it matters a great deal to great environmental, economic and social benefits to achieving the purposes that reduce smoke pollution, save energy and ensure the economic development and the safe production [7,8,9]. It is of great significance to saving energy in the long-distance pipeline network, and supports the engineers in the calculation of the thickness of the long-distance direct-buried hot water pipe insulation [10]. Since the laying foundation of the heating pipe network, these have not been tested or evaluated the current situation of insulation and have not mastered the weak links of insulation; many pipelines’ insulation structure has been in disrepair for a long time and is seriously damaged. Test and evaluation of the insulation status in heating pipelines can identify the weak links of insulation and provide theoretical basis and technical support for the insulation reforming
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