CN1110649C - Method for utilizing cold in gasifying liquefied petroleum gas - Google Patents
Method for utilizing cold in gasifying liquefied petroleum gas Download PDFInfo
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- CN1110649C CN1110649C CN 98117022 CN98117022A CN1110649C CN 1110649 C CN1110649 C CN 1110649C CN 98117022 CN98117022 CN 98117022 CN 98117022 A CN98117022 A CN 98117022A CN 1110649 C CN1110649 C CN 1110649C
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- liquefied petroleum
- petroleum gas
- central air
- gas
- heat exchanger
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention relates to a method for utilizing cold on gasifying liquefied petroleum gas. Heat exchange is carried out between liquefied petroleum gas in an evaporator 1 and about 12 DEG C of circulating water from a a heat exchanger 11 of a central air conditioner, and then, the liquefied petroleum gas is evaporated to gaseous petroleum gas and is delivered to a user through a pipe. Low warmed water which is reduced to 7 DEG C serves as a refrigeration source of the central air conditioner, and enters the heat exchanger 11 of the central air conditioner to carry out heat exchange with indoor warm air, and thus, the purpose of temperature drop of the air conditioner is obtained. Thus, the circulating water circularly flows between a liquefied petroleum gas evaporator 1 and the heat exchanger 11 of the central air conditioner, and no extra energy resource is needed. When the pipeline transportation of the liquefied petroleum gas is realized, the problem of the air conditioners of the inside of near building rooms is solved. A large quantity of energy resources are saved.
Description
The present invention relates to the power-economizing method at gasifying liquefied petroleum gas station, the power-economizing method when being specifically related to the gasifying liquefied petroleum gas at gasifying liquefied petroleum gas station.
Existing liquefied petroleum-gas station, for the liquefied petroleum gas that makes the gas station successfully flows to the user by pipeline, normally the burning of electricity consumption or oil gas adds hot water, and reusable heat water or Steam Heating liquefied petroleum gas make it become the oil gas of gaseous state, transfer out by pipeline.About 40 ℃ hot water of heating usefulness is reduced to about 25 ℃ after the heat exchange in the liquefied petroleum gas-heat exchanger, through recycling after the heating again.This method, because the temperature difference of liquefied petroleum gas and hot water is big, gasification rate is very fast, required heat of gasification switching equipment (being evaporimeter) is smaller.But this gasification process, the cold in the time of not only can not utilizing the oil liquefied gas gasification, but also consume hot water, wasted many energy.
As everyone knows, traditional central air-conditioning is as refrigeration source (cold-producing medium) with fluorine Lyons, with water as carrying a cold medium, to be water-cooled to about 7 ℃ by compression, condensation, throttling and evaporation, above-mentioned about 7 ℃ water enters the heat exchanger of central air-conditioning and indoor hot-air carries out heat exchange, thereby reaches the purpose of air-conditioning temperature-reducing.Promptly,, reach the purpose of air-conditioning by the temperature of carrying cold WATER AS FLOW MEDIUM reduction room air by the continuous evaporation and the liquefaction of refrigerant.
The object of the present invention is to provide the power-economizing method at a kind of gasifying liquefied petroleum gas station, i.e. the present invention is directly gasified gas station liquid liquefied petroleum gas with normal-temperature water, makes it to become gaseous state oil gas, flows to the user by pipeline; The low-temperature cold water that cooling obtains when normal-temperature water makes gasifying liquefied petroleum gas is introduced in the indoor central air conditioner system as the refrigeration source, reaches the purpose of air-conditioning temperature-reducing, can save a lot of energy.
The power-economizing method at gasifying liquefied petroleum gas of the present invention station, it is characterized in that it being that the liquefied petroleum gas in the liquefied petroleum-gas station fluid reservoir is input in the liquefied petroleum gas evaporimeter, liquefied petroleum gas in evaporimeter through with about 12 ℃ hydrothermal exchange from the central air-conditioning heat exchanger after flash to gaseous state oil gas and input to the user through pipeline; Carrying out reducing to after the heat exchange about 7 ℃ water at low temperature with liquefied petroleum gas in evaporimeter enters as the refrigeration source of central air-conditioning in the heat exchanger of central air-conditioning and carries out heat exchange with indoor hot-air, thereby reduce the temperature of room air, reach the purpose of air-conditioning temperature-reducing, and by discharge in the central air-conditioning heat exchanger through with the room air heat exchange after about 12 ℃ water directly enter in the liquefied petroleum gas evaporimeter and carry out heat exchange with liquefied petroleum gas.So, by above-mentioned recirculated water circulating between liquefied petroleum gas evaporimeter and central air-conditioning heat exchanger, in the gasification of the liquefied petroleum gas of realizing liquefied petroleum-gas station and in by the pipeline conveying, for central air-conditioning provides cold.
This method of directly coming the heating and gasifying liquefied petroleum gas with normal-temperature water, when the lpg pipeline of realizing liquefied petroleum-gas station is transported to the user, the cold that liquefied petroleum gas discharges when becoming gaseous state by liquid state replaces traditional refrigeration source (fluorine Lyons refrigerant), by carrying the circulation of cold WATER AS FLOW MEDIUM, reach the purpose of air-conditioning.In fact be exactly the liquefied petroleum gas that utilizes the heat gasification liquefied petroleum-gas station of indoor hot-air by the circulation of aqueous medium dexterously, both realized the conveying of liquefied petroleum gas, reached the purpose of room conditioning again.Saved the required lot of energy of traditional fluorine Lyons refrigerant air-conditioning, the energy of required consumption when also having saved traditional hot water heating and gasifying method transportation of liquefied oil gas.
The present invention notices need absorb a lot of heats during gasifying liquefied petroleum gas when liquefied petroleum gas stands in transportation of liquefied oil gas, and simultaneously, the central air-conditioning in the building is nearby then emitted a lot of heats.In view of this, the present invention is according to the designing requirement of central air-conditioning, selection is near the direct heating and gasifying liquefied petroleum gas of central air-conditioning heat exchanger recirculated water of normal temperature (12 ℃), and by circulating between liquefied petroleum gas evaporimeter and central air-conditioning heat exchanger as the recirculated water that carries cold medium, when carrying, for the central air-conditioning of building nearby provides cold with the gasification of the liquefied petroleum gas of realizing liquefied petroleum-gas station and by pipeline.According to above-mentioned scheme, be easy to determine the evaporation capacity of liquefied petroleum gas according to the conveying capacity of a certain liquefied petroleum-gas station liquefied petroleum gas, again according to the temperature difference (12 ℃-7 ℃) of the recirculated water of the above-mentioned evaporation capacity and the central air-conditioning heat exchanger of coming in and going out, determine the concrete parameter of quantity of circulating water and liquefied petroleum gas evaporimeter, selected or the manufacturing liquefied petroleum gas evaporimeter according to above-mentioned concrete parameter, corresponding central air-conditioning heat-exchange system then adopts ready-made central air-conditioning heat-exchange system fully, in other words, press the liquefied petroleum gas vapo(u)rization system of such scheme design, can determine to drive how many above-mentioned existing central air-conditioning, promptly can drive the air-conditioning area of what square metres.Specific design and to implement all be mature technique very.
For example: the conveying capacity of a certain liquefied petroleum-gas station liquefied petroleum gas is per hour 3 tons, also is that the design evaporation capacity of liquefied gas (propane) is per hour 3 tons.Can select diameter of section is Ф 600mm, and length is the evaporator of 3600mm (evaporimeter).3 tons the required heat of evaporation of liquefied propane gas of per hour gasifying is 306000kcal/h (ignoring-23 ℃ to the required heat of 7 ℃ gas heating), inflow temperature (≈ central air-conditioning heat exchanger circulating water outlet temperature) by this evaporator is 12 ℃, the leaving water temperature of evaporator (≈ central air-conditioning heat exchanger circulating water intake temperature) is 7 ℃ of calculating, and quantity of circulating water is per hour about 62 tons.Consider size, facility what, the ignorance factors such as personnel's circulation and building structure of the loss of the thermal efficiency, the cold in the low-temperature cold water transmission course of the gasifying liquefied petroleum gas thermal efficiency, idle call heat exchanger and office space, if the utilization rate of above-mentioned heat of evaporation (306000kcal/h) is 30%～50%, office's air-conditioning area refrigeration duty of estimating by the civil buildings Air-conditioner design load estimation calculation method of building Ministry of worker's recommendation is 800kcal/m
2Meter, about 1400 square metres～1800 square metres of then available office air-conditioning area.
Be described further below in conjunction with the power-economizing method of accompanying drawing gasifying liquefied petroleum gas of the present invention station:
Fig. 1 is a process flow diagram of the present invention.
As shown in Figure 1, from the liquefied petroleum gas in the liquefied petroleum-gas station fluid reservoir through liquefied petroleum gas liquid-inlet stop valve 4, check-valves 3 and liquefied petroleum gas liquid-level controller 2 enter in the liquefied petroleum gas evaporimeter 1: the recirculated water from central air-conditioning heat exchanger 11 enters circulating water pool 12, ON cycle water pipe stop valve 9, starting water circulating pump 10 will pump into through about 12 ℃ recirculated water that thermometer is measured in the coil pipe that is arranged in the liquefied petroleum gas evaporimeter 1, carry out heat exchange with the liquefied petroleum gas in the evaporimeter 1, the gaseous state oil gas that liquefied petroleum gas flashes to after the heat exchange is through liquefied petroleum gas gas vent stop valve 5 input user pipe: and from about 12 ℃ recirculated water of central air-conditioning heat exchanger 11 through with the liquefied petroleum gas evaporimeter in the liquefied petroleum gas heat exchange after about 7 ℃ cold water of reducing to of measuring through thermometer 7 enter central air-conditioning heat exchanger 11 and indoor hot-air carries out heat exchange through stop valve 8, for central air-conditioning provides cold.
Claims (1)
- The power-economizing method at a kind of gasifying liquefied petroleum gas station, it is characterized in that it being that the liquefied petroleum gas in the liquefied petroleum-gas station fluid reservoir is input in the liquefied petroleum gas evaporimeter (1), liquefied petroleum gas in evaporimeter (1) through with about 12 ℃ hydrothermal exchange from central air-conditioning heat exchanger (11) after flash to gaseous state oil gas and input to the user through pipeline; Reducing to about 7 ℃ water at low temperature carry out heat exchange with liquefied petroleum gas in evaporimeter (1) after enters in the central air-conditioning heat exchanger (11) as the refrigeration source of central air-conditioning and carries out heat exchange with indoor hot-air, reduce the temperature of room air, and by discharge in the central air-conditioning heat exchanger (11) through with the room air heat exchange after about 12 ℃ water directly enter in the liquefied petroleum gas evaporimeter (1) and carry out heat exchange with liquefied petroleum gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98117022 CN1110649C (en) | 1998-10-29 | 1998-10-29 | Method for utilizing cold in gasifying liquefied petroleum gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98117022 CN1110649C (en) | 1998-10-29 | 1998-10-29 | Method for utilizing cold in gasifying liquefied petroleum gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1236877A CN1236877A (en) | 1999-12-01 |
| CN1110649C true CN1110649C (en) | 2003-06-04 |
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ID=5225328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98117022 Expired - Fee Related CN1110649C (en) | 1998-10-29 | 1998-10-29 | Method for utilizing cold in gasifying liquefied petroleum gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1110649C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315533B (en) * | 2014-10-14 | 2017-09-26 | 谢红飞 | A kind of method of liquefied petroleum gas gas station energy-conservation |
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1998
- 1998-10-29 CN CN 98117022 patent/CN1110649C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1236877A (en) | 1999-12-01 |
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Addressee: Xie Hongfei Document name: Notice of first review |
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Granted publication date: 20030604 Termination date: 20171029 |