A system is provided to recover unutilized energy as electric power in hydraulic turbine power generation. The system includes a heat storage tank, a pump for pumping water from the heat storage tank and to air conditioning loads, a first water feed pipe connected between an outlet of the storage pu
A system is provided to recover unutilized energy as electric power in hydraulic turbine power generation. The system includes a heat storage tank, a pump for pumping water from the heat storage tank and to air conditioning loads, a first water feed pipe connected between an outlet of the storage pump and the air conditioning loads, and a second water feed pipe for returning the water discharged from the air-conditioning loads. A hydraulic turbine driven generator is provided on a lower portion of the second water feed pipe at such a position as to recover the potential energy of the water discharged from the air conditioning loads.
대표청구항▼
What is claimed is: 1. A method of operating an energy recovery apparatus in accordance with the following procedure, said apparatus comprising: a heat storage tank; a storage pump; a water lift pump for feeding water from said heat storage tank to an air-conditioning load; a first water feed pipe
What is claimed is: 1. A method of operating an energy recovery apparatus in accordance with the following procedure, said apparatus comprising: a heat storage tank; a storage pump; a water lift pump for feeding water from said heat storage tank to an air-conditioning load; a first water feed pipe provided between an outlet port of said storage pump and said air-conditioning load; a second water feed pipe for returning water that is discharged from an outlet port of said air-conditioning load to said heat storage tank; a hydraulic turbine in fluid communication with said second water feed pipe, said hydraulic turbine comprising inlet valves and outlet valves; a hydraulic turbine bypassing valve for bypassing said hydraulic turbine; and a generator driven by said hydraulic turbine to produce electric power, said electric power being supplied to an electrical load, wherein at a time of starting operation of said apparatus: (1) said inlet valves of said hydraulic turbine open, said outlet valves of said hydraulic turbine close, and said hydraulic turbine-bypassing valve closes; (2) power is provided to a storage pump-driving electric motor; (3) a start signal is provided from said generator to said water lift pump; (4) operation of said water pump begins after passage of a predetermined time after receiving an operation answer signal; (5) said outlet valves of said hydraulic turbine open after passage of said predetermined time, thereby operating said hydraulic turbine and operating said generator to generate electric power; and (6) said electric power is supplied to said electric load, wherein at a time of stopping operation of said apparatus: (1) said outlet valves of said hydraulic turbine close, said hydraulic turbine is stopped, and said generator is stopped; (2) said generated electric power is no longer supplied so that said electric power is no longer supplied to said electric load; and (3) a stop signal from said generator is provided to said water lift pump, thereby stopping operation of said water lift pump. 2. A method of operating an energy recovery apparatus according to claim 1, comprising: operating said generator; and detecting that an inlet pressure at said inlet valves of said hydraulic turbine has attained a predetermined pressure, and in response thereto, fully opening said inlet valves and said outlet valves. 3. A method of operating an energy recovery apparatus in accordance with the following procedure, said energy recovery apparatus comprising: a heat storage tank located at a lower portion of a building; a water lift pump for feeding water from said heat storage tank to an air-conditioning load; a storage pump; a first water feed pipe provided between an outlet port of said storage pump and said air-conditioning load; a second water feed pipe for returning water discharging from an outlet port of said air-conditioning load to said heat storage tank; an expansion tank or a vacuum breaking valve provided on the highest portion of said second water feed pipe; a hydraulic turbine connected at a lower portion of said second water feed pipe and positioned such that a potential energy of water discharged from a group of said air-conditioning loads can be recovered; and a generator rotationally driven by a torque generated by said hydraulic turbine, thereby generating electric power, wherein said electric power is supplied to said water lift pump, to said group of air-conditioning loads, and to an electric load, wherein at a time of starting a operation of said apparatus: (1) said inlet valves of said hydraulic turbine open, said outlet valves of said hydraulic turbine close, and said hydraulic turbine-bypassing valve closes; (2) power is provided to a storage pump-driving electric motor; (3) a start signal is provided from said generator to said water lift pump; (4) operation of said water pump begins after passage of a predetermined time after receiving an operation answer signal; (5) said outlet valves of said hydraulic turbine open after passage of said predetermined time, thereby operating said hydraulic turbine and operating said generator to generate electric power; and (6) said electric power is supplied to said electric load, wherein at a time of stopping operation of said apparatus: (1) said outlet valves of said hydraulic turbine close, said hydraulic turbine is stopped, and said generator is stopped; (2) said generated electric power is no longer supplied so that said electric power is no longer supplied to said electric load; and (3) a stop signal from said generator is provided to said water lift pump, thereby stopping operation of said water lift pump. 4. A method of operating an energy recovery apparatus according to claim 3, comprising: operating said generator; and detecting that an inlet pressure at said inlet valves of said hydraulic turbine has attained a predetermined pressure, and in response thereto, fully opening said inlet valves and said outlet valves.
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이 특허에 인용된 특허 (5)
Guisti Vito (Walpole MA), Domestic water pressure-flow powered generator system.
Satoh, Kouichi; Yanagisawa, Seiji; Watabe, Shu; Fujita, Yukihiro; Shima, Akio; Tanaka, Yuji; Takahashi, Shinichi; Kunii, Hiroshi, Energy collecting system and method of operating the same.
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