Joel I Levin

20210025292, Jan 28, 2021

Sep 21, 2020

16/948483

Joel Melvin Levin - Wynnewood PA, US

F01K 9/00
F01K 7/16
F01K 17/02

A steam turbine power plant utilizing high temperature high efficiency industrial heat pumps (IHP) to preheat boiler feedwater is disclosed. The typical extraction steam feedwater preheater is replaced by a plurality of series connected heat pumps that produce boiler feedwater by preheating pressurized condensate from a feedwater pump attached to a condensate receiver. A stack economizer extracts waste heat from boiler flue gas to provide a closed loop of hot source water to the heat pumps. The Heat Rate of the power plant will be reduced by approximately 7%. By using leaving condenser water as source water for the lower temperature stage heat pumps, some of the liberated high temperature source water can be diverted to a new boiler combustion air preheater. The combination of feedwater preheating heat pumps plus a boiler combustion air preheater will reduce the Heat Rate of the power plant by approximately 12%.

20150369084, Dec 24, 2015

Jun 24, 2015

14/749226

Joel M. Levin - Wynnewood PA, US

F01K 7/40
F01K 9/00
F22D 1/16
F01K 7/38

A system for pre-heating boiler feedwater and cooling condenser water includes a boiler, a turbine, a turbine condenser, a heat pump, a first heat exchanger, a second heat exchanger, and an expansion valve. A water stream is heated by the boiler into a high pressure steam. The high pressure steam passes through the turbine and into the turbine condenser, converting the steam into condensate. The condensate is passed through a heat receiving side of the first heat exchanger. A refrigerant stream is pressurized by the heat pump and is thereby heated. The refrigerant stream passes through a heat dissipating side of the first heat exchanger, heating the condensate. The refrigerant stream is then depressurized and cooled, and passes through a heat receiving side of the second heat exchanger. A condenser water stream passes through a heat dissipating side of the second heat exchanger, cooling and entering the turbine condenser.