Patent ID: 9234686
Filing Date: 2016-01-12
CPC Classification: F24D,F24H,F25B,Y02B

Claim Text:
1. A heat transfer system comprising: a compressor for circulating a working fluid, the compressor having an inlet and an outlet, the compressor operable at a controllable operating capacity; a condenser connected to the outlet of the compressor, the condenser configured to receive flow of water to be heated; an electrically controlled valve positioned to receive the working fluid from the outlet of the condenser; an evaporator connected between an outlet of the electrically controlled valve and the inlet of the compressor, the evaporator configured to receive flow of waste-heat bearing fluid; pressure and temperature sensors positioned to measure pressures and temperatures of the heat transfer system; and a controller connected to the pressure and temperature sensors, the electrically controlled valve, and the compressor, the controller configured to control the heat transfer system according to one or more of compressor suction superheat, compressor discharge superheat, compressor suction pressure, compressor discharge pressure, and water temperature, the controller including a touchscreen configured to display a user control interface configured to display one of a first view, a second view and a third view based on a permissions database defining different types of users, wherein the different types of users include an operator user type having permission to access the first view, a superintendant user type having permission to access the second view, and a manufacturer user type having permission to access the third view: