![Journal of IAR](/images/mag-vest.jpg)
Thermal calculation of the water outlet device for the polypropylene pipes of cold water supply in winter conditions of the Far North
![Journal of IAR](/images/mag-vest.jpg)
Annotation
The paper deals with the design of water outlet device in the form of polypropylene branch pipe with a locking bolt welded to the bottom of a water supply system made of polypropylene pipe in a distributive network of cold water supply. Water freezing in the branch pipe and overcooling of a locking bolt at extremely low temperatures is determined by means of the numerical solution for the thermal problem of temperature distribution in the outlet device. Improvement of the outlet device design can be done by adding the heat-conducting rod, flown over by the water from water supply system, to the lock bolt. It is shown that the proposed design of the outlet device is not exposed to overcooling under extremely low temperatures, provided that the branch pipe length, thickness of the heat-conducting rod, and the thermal insulation layer for a given standard size of the branch pipe and the chosen metal for the lock bolt with the heat-conducting rod has been chosen properly. The Delphi-7 based software with a data input form was developed for keyboard of all necessary data, visualization of temperature change dynamics in reference points, and an output of stationary temperature distribution in the outlet device.
Keywords
Постоянный URL
Articles in current issue
- Valorization of residual yoghurt whey by lactic acid production: An optimized process
- New modes of cherry compote sterilization in autoclaves with preheating of fruits in jars with saturated steam and two-stage cooling
- Unit for fine grinding of cottage cheese
- Production of high-quality dry modified collagen products by means of freeze-drying
- Analysis of risk assessment approaches in the transportation of refrigerated containers
- Thermodynamic efficiency of vegetable oil production line with pre extrusion treatment of raw materials
- On the issue of compressible medium leakage in operating unit of single-rotor screw compressor (SSC) with circumferential shape of the tooth
- Thermal calculation of the water outlet device for the polypropylene pipes of cold water supply in winter conditions of the Far North
- The use of the capacitive sensors for the study of condensation processes in the short heat pipes of low-temperature range. Calculation of the sensors
- Features research of experimental and predesign chamber fruits and vegetables store with controlled atmosphere
- The influence of the design parameters for the flow part of short diffusers on their gas-dynamic efficiency
- The influence of absorbent concentration on cooling capacity of heat and mass transfer devices with a mobile nozzle
- Heat and mass transfer in the rooms with forced air supply
- Planetary temperature calculations under Milankovitch cycles
- The 23th General Annual Meeting of the International Academy of Refrigeration
- Results of the IAR’s work in 2015-2016 (Report of the IAR President at the 23th General Annual Meeting on 25 May 2016)