CN1257987A

CN1257987A - Dual-source reversible heating system

Info

Publication number: CN1257987A
Application number: CN 00100102
Authority: CN
Inventors: 宋虹; 宋群
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-01-10
Filing date: 2000-01-10
Publication date: 2000-06-28
Anticipated expiration: 2020-01-10
Also published as: CN1259534C

Abstract

A new heating system scheme aimed at decreasing energy consumption and reducing the dependency of the both heat and electricity generating system on common electric network features that the both heat and electric generator set is arranged in the heating-air conditioning station, the efficient heat radiator and electric air conditioner are installed at user position to form a "dual-source air conditioner set", the heat and electric energy provided by the both heat and electricity generating system are supplied to the efficient heat radiator and electric air conditioner set, and the cold water generated in hot season is also passed to efficient radiators. Its advantage is the obviously reduced energy consumption.

Description

Dual-source reversible heating system

The present invention is new departure of heating, relates to co-generation unit and concerns problem with public electric wire net.

Existing heating system, primary energy consumption is higher, mostly marks coal/GJ (heat) between 65kg mark coal/GJ (heat) at 45kg.Though conventional cogeneration of heat and power scheme is capable of reducing energy consumption, has two problems.At first be that the consumption reduction amplitude is still not ideal enough, net coal consumption rate is many more than 250g/kWh, and the heating coal consumption only is the level of 40kg mark coal/GJ (heat).In addition, " electricity determining by heat " is that the physical substance of cogeneration of heat and power determines, also is the basic prerequisite of its create beneficial result.So, obtain heat and just must produce electricity, and the coproduction electricity exists many contradiction and problem with public electric wire net occupying electricity market, receive price and whether participate in aspect such as peak load regulation network in the sale process, be influence the key factor that cogeneration of heat and power develops.As cogeneration of heat and power factory and public electric wire net are isolated, because of stronger relation of interdependence between the heat energy production of electrical energy production and coproduction with it, be difficult to satisfy simultaneously the desirability of electric load and thermic load again.

Purpose of the present invention is further to reduce the primary energy consumption amount of heating on the one hand, is on the other hand to weaken still to breaking away from the dependence relation of co-generation unit to public electric wire net.

Mark sheet of the present invention is following 6 points now: the high-efficiency radiator (such as fan unit tubular type radiator etc.) and the electronic air conditioner unit of Winter-summer dual purpose are housed simultaneously, the two common formation " double source air-conditioner group " at the user place 1.; 2. in the heating air-conditioner station, be provided with cogeneration units, and heating air-conditioner station and user linked with the direct-type grid; 3. at heating season, the hot water of producing in the coproduction mode is led to high-efficiency radiator among user's " double source air-conditioner group " by pipe network, what use as hot machine is water vapour circulation or with the combined cycle of water vapour circulation as end circulation, and the heating coolant-temperature gage between then non-freeze-up is regulated in being lower than 55 ℃ scope; In administration's season, then the cold water of producing is led to high-efficiency radiator in " double source air-conditioner group " in heating air-conditioner master station or substation; 4. for the user who uses the direct-type pipe network by the inconvenience of the reason on the waterpower, then get in touch by water resource heat pump/air conditioner establishment standpipe net and user's indirect type; 5. the electric energy produced of cogeneration units is supplied with the electronic air conditioner unit among user's " double source air-conditioner group " fully; 6. can in the heating air-conditioner station, establish the temperature adjustment tower in case of necessity, avoid the restriction of coproduction heat further to guarantee generated energy.

This production of heat energy and occupation mode invertibity are higher among the present invention, are called " reversible " mode, are the energy-conservation important method of relying.Owing to used " reversible ", primary energy consumption is obviously reduced, can reduce by 20% to 40% than boiler heating, as the source of having surplus heat can be used as the heat pump low-temperature heat source, then can reach reduction by a larger margin.The more important thing is the present invention when cutting down the consumption of energy,, thereby weaken and even broken away from tight dependence relation between cogeneration of heat and power heating system and the public electric wire net because electric load consumes synchronous variation with thermic load.

Be illustrated below in conjunction with accompanying drawing.Fuel send into boiler or combustion chamber 1. in, 3. 2. logical overheated machine produce electric energy and heat energy with generator, 6. 4. its electric energy of producing deliver to the electronic air conditioner unit of user in 5. by transmission line of electricity, 7. the heat energy of being produced then be sent to heat exchangers for district heating, 9. 8. the hot water that produces deliver to the high-efficiency radiator of user in 5. by pipe network, between freeze-up, can 10. further improve the temperature of confessing hot water by the peakload device, 9. the cold water of producing in then heating air-conditioner master station or substation in the heated term lead to high-efficiency radiator, 6. 9. high-efficiency radiator form user's " double source air-conditioner group " jointly with electronic air conditioner unit, temperature adjustment tower (11) adjustable apparatus inlet water temperature is 7. avoided the restriction of coproduction heat further to guarantee generated energy.

Be described further below in conjunction with using example of the present invention.For the residential quarters to the 400000 square meter construction areas in cities and towns, North China are equipped with heating equipment, former plan adopts the boiler of simple heat supply, need 40 tons/hour of quantity of steams altogether by the design load, consider the required allowance of peakload, two in the boiler of installing natural gas fuel, every capacity is 25 tons/hour, and calorific capacity of natural gas is 37680kJ/Nm ³, heating period year air demand 6,100,000 standard cubic meters, natural gas price ³, annual heating needs 1,100 ten thousand yuan of fuel costs.Now adopt the present invention program, be equipped with one of the steam turbine TRT of 6000kW, the live steam parameter is 435 ℃ of 35 bar, need the vapour amount be 30 tons/time, install two of gas fired-boilers for this reason, every quantity of steam be 20 tons/time.The design supply water temperature in heating season is 55 ℃, the nothing left thermal source can be supported utilization, the coefficient of performance of heat pump is 2.5, the heat pump heat supply amount is 1 to 1.55 with the ratio of pipe network heating load, it be 470 ten thousand steres that year needs amount of natural gas, thereby make the present invention program in the annual fuel savings expense 23% of heating season, amount to 2,500,000 yuan, and do not have the problems relevant with public electric wire net.As adopt gas-steam combined Cycle Unit or other high efficiency thermoelectric coproduction units or the thermal source of having a surplus can support utilization, then saving of fuel is more remarkable.Under administration's season central cooling operating mode, energy consumption of the present invention also descends to some extent, has improved the year utilization rate of equipment simultaneously, helps reducing cost.

Claims

New departure of a kind of heating, relate to co-generation unit, the fuel inlet of this system be boiler or combustion chamber 1., logical overheated machine is 2. (for the hot machine of types such as internal combustion engine, 1. 2. hot machine unite two into one with the combustion chamber) and generator 3. produce electric energy and heat energy, 6. 4. the electric energy of being produced deliver to the electronic air conditioner unit of user in 5. by transmission line of electricity, 7. the heat energy of being produced then be sent to heat exchangers for district heating, 9. 8. the hot water that produces deliver to the high-efficiency radiator of user in 5. by pipe network, between freeze-up, can 10. further improve the temperature of confessing hot water by the peakload device, 9. the cold water of producing in then heating air-conditioner master station or substation in the heated term lead to high-efficiency radiator, 6. 9. high-efficiency radiator form user's " double source air-conditioner group " jointly with electronic air conditioner unit, temperature adjustment tower (11) adjustable apparatus inlet water temperature 7., avoid the restriction of coproduction heat further to guarantee generated energy, the feature of whole system is made of following 6 of connecting each other: 1. high-efficiency radiator (such as fan unit tubular type radiator etc.) and electronic air conditioner unit that Winter-summer dual purpose is housed simultaneously at user place, the two forms " double source air-conditioner group " jointly, 2. in the heating air-conditioner station, be provided with cogeneration units, and heating air-conditioner station and user are linked with the direct-type grid, 3. at heating season, the hot water of producing in the coproduction mode is led to high-efficiency radiator among user's " double source air-conditioner group " by pipe network, what use as hot machine is water vapour circulation or with the combined cycle of water vapour circulation as end circulation, heating coolant-temperature gage between then non-freeze-up is regulated in being lower than 55 ℃ scope, in administration's season, then the cold water of producing is led to high-efficiency radiator in " double source air-conditioner group " in heating air-conditioner master station or substation, 4. for the user who uses the direct-type pipe network by the inconvenience of the reason on the waterpower, then get in touch by water resource heat pump/air conditioner establishment standpipe net and user's indirect type, 5. the electric energy produced of cogeneration units is supplied with the electronic air conditioner unit among user's " double source air-conditioner group " fully; 6. can in the heating air-conditioner station, establish the temperature adjustment tower in case of necessity, avoid the restriction of coproduction heat further to guarantee generated energy.