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Automation of floor heating process with heat pump using

Journal: Automation of technological and business processes (Vol.7, No. 4)

Publication Date:

Authors : ;

Page : 76-80

Keywords : ;

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Abstract

The floor heating method with heat pump using was considered. Transfer functions of control object were received and base structure of ASC with PID-regulators in each channel was built. Realization of higher dynamic efficiency ASC, such as cascade in regulating contour of refrigerant superheat temperature in the heat pump evaporator, where intermediate point is the present value of refrigerant pressure in the heat pump evaporator. Measurement and maintaining of refrigerant pressure in the heat pump evaporator are necessary because of big enough inertia of refrigerant superheat temperature, which causes a sharp decrease of dynamic efficiency of ASC. Project documentation sketches of automation, connections and power schemes for controllers of two different firms: Fastwell and SIEMENS was developed. Also development of project documentation sketches of wiring diagram control shield for operator-technologist on SIEMENS controller was provided. For the case, when ability of sensor panel using for operator-technologist AWP is present the program realization of floor heating process distance control was provided in the form of SCADA-system with using of controller programming environment Siemens Simatic Step7 and environment for human-machine interface creating Simatic WinCC Flexible for family controllers Simatic S7-300, it provides more possibilities for operator-technologist during process control. The similar AWP was provided for family controllers Fastwell IO with controller programming environment CoDeSys using, which provides both program realization of process distance control and human-machine interface realization.

Last modified: 2017-06-15 08:46:53