CN104089379A - Method for assessing efficiency of underground powerhouse ventilating and air conditioning system - Google Patents
Method for assessing efficiency of underground powerhouse ventilating and air conditioning system Download PDFInfo
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- CN104089379A CN104089379A CN201410354726.5A CN201410354726A CN104089379A CN 104089379 A CN104089379 A CN 104089379A CN 201410354726 A CN201410354726 A CN 201410354726A CN 104089379 A CN104089379 A CN 104089379A
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Abstract
The invention provides a method for assessing efficiency of an underground powerhouse ventilating and air conditioning system. Thermometers, hygrometers and air volume monitors are arranged outside an underground powerhouse and in an air inlet duct opening and an air outlet duct opening of the ventilating and air conditioning system. The method comprises the following steps that the initial temperature and the initial humidity are measured, and the initial air enthalpy is calculated; the outlet temperature and the outlet humidity D2 are measured, and the outlet air enthalpy of the ventilating and air conditioning system is calculated; the initial air volume and the outlet air volume are measured, and the ventilation heat dissipation quantity is calculated; the refrigerating capacity and total consumed power of a refrigerating unit are obtained; the efficiency of the ventilating and air conditioning system is judged. According to the method, the designing and operating energy consumption level of the ventilating and air conditioning system can be comprehensively judged, it can be dynamically and comprehensively reflected that the ventilating and air conditioning system can adapt to the change of environment heat, a value basis is provided for judging whether the arrangement of ventilating and air conditioning systems of different underground powerhouse is reasonable or not and whether operating is achieved in an energy-saving mode or not, and the theoretical foundation and a mathematical model are provided for making system design and energy-saving targets for operation management, assessing system energy saving level and making energy saving strategies.
Description
Technical field
The present invention relates to a kind of assessment method of underground workshop ventilation and air conditioning system usefulness.
Background technology
Before the final acceptance of construction of existing underground workshop and Pumped Storage Plant Underground Powerhouse ventilation and air conditioning system, in the mensuration of environment and sanitary index, only the environmental index in power station being carried out to single numerical evaluation differentiates the humiture parameter in each place and whether meets design and relevant labour hygiene standard, for example, the only operational factor to single ventilation air-conditioning equipment, measure as air quantity, flow, power etc., evaluate the efficiency index of single equipment.And in fact, underground workshop ventilation and air conditioning system is a comprehensive system, the dynamic effects that is subject to the external environment condition such as ambient parameter, equipment operating condition, whole system is interrelated, and the mensuration of single data target is difficult to the usefulness of the whole ventilation and air conditioning system of complete detection.Present stage lacks one and utilizes simply and easily measured data, can reflect the assessment method of the every effectiveness parameters of system comprehensively, unifies to pass judgment on the ventilation and air conditioning system comprehensive effectiveness in each power station.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of assessment method of underground power house ventilation and air conditioning system usefulness, the method has quantized the indices of underground workshop ventilation and air conditioning system, can set up model for the formulation of hydroelectric system underground power house ventilation and air conditioning system energy-saving index.
The technical scheme that technical solution problem of the present invention adopts is:
The assessment method of underground power house ventilation and air conditioning system usefulness, the method outside underground power house and the entering of ventilation and air conditioning system, air draft road junction set temperature meter, hygrometer and air quantity monitor, and comprises the following steps:
1) measure initial temperature T
1with initial humidity D
1and calculate initial air enthalpy I
1;
2) measure outlet temperature T
2with outlet humidity D
2and calculate its outlet air enthalpy I
2;
3) measure initial air quantity Q
1with outlet air quantity Q
2, and in conjunction with initial air enthalpy I
1with outlet air enthalpy I
2calculate ventilation heat;
4) obtain the refrigeration unit refrigerating capacity M of ventilation and air conditioning system and total wasted work rate W of ventilation and air conditioning system;
5) judge the usefulness of described ventilation and air conditioning system according to ventilation heat, refrigeration unit refrigerating capacity M and total wasted work rate W.
In adopting technique scheme, the present invention is further technical scheme below can also adopting or combine and adopting:
Concerning the underground power house of direct air intake, described initial temperature and initial humidity refer to the temperature and humidity outside the cavern of underground power house; For the underground power house that air inlet duct is set, described initial temperature and initial humidity refer to through the temperature and humidity outside the naturally cooled underground power house of air inlet duct.
Concerning the underground power house of direct air intake, described initial air quantity refers to the air quantity outside the cavern of underground power house; For the underground power house that air inlet duct is set, described initial air quantity refers to the air quantity outside the underground power house after air inlet duct.
Concerning the underground power house of air inlet duct is set, described assessment method also comprises the step of calculating air intake rock mass nature amount of cooling water, and the step of described calculating air intake rock mass nature amount of cooling water specifically comprises the following steps:
1) temperature T of mensuration air inlet duct porch
3with humidity D
3and calculate the air enthalpy I of porch
3;
2) temperature T in mensuration air inlet duct exit
4with humidity D
4and calculate the air enthalpy I of porch
4;
3) the air quantity Q of mensuration air inlet duct porch
3air quantity Q with air inlet duct exit
4, and in conjunction with air enthalpy I
3and I
4calculate air intake rock mass nature amount of cooling water.
Described assessment method counts the building enclosure of underground power house to the thermal discharge of suction naturally of air.
The invention has the beneficial effects as follows: the assessment method of ventilation and air conditioning system usefulness of the present invention, solve underground workshop ventilation and air conditioning system usefulness and detected a difficult problem that is difficult to comprehensive judge, take full advantage of every measured data, by ventilation and air conditioning system and utilize natural cold source distinguish, convert measured data to unified detection data, the indices including temperature, humidity, air quantity and refrigerating capacity relevant to the usefulness of ventilation and air conditioning system carried out to comprehensive quantification, obtain the unified quantization index to ventilation and air conditioning system.The efficiency index data that obtain by assessment method of the present invention, can judge the energy consumption level that ventilation and air conditioning system relates to and moves comprehensively, can be dynamic, reflect all sidedly the ventilation and air conditioning system thermal change that conforms, can be whether reasonable for the setting of the different underground power house ventilation and air conditioning systems of differentiation, move whether Energy Conservation is for numerical value basis, simultaneously for formulating system and operational management energy-saving index and evaluating system energy-saving horizontal, formulate energy saving policy, theoretical foundation and Mathematical Modeling are provided, to the design of underground power house ventilation and air conditioning system, operational management has directive function.
Brief description of the drawings
Fig. 1 is the flow chart of embodiments of the invention 1.
Fig. 2 is the flow chart of embodiments of the invention 2.
Detailed description of the invention
Underground Hydro-electric Power Station group is open system, the total heat exhaust of factory building comprises the heat that draft takes away, the refrigerating capacity that refrigeration system provides, in addition, hot wet process has been carried out to outdoor air intake in the underground engineering design air intake hole that utilizes in service, utilize the naturally cooling characteristic of subterranean body to take away the hot humidity load of air intake, also belong to a part for the total heat extraction of ventilation and air conditioning system, can, according to whether utilizing the natural amount of cooling water of rock mass that the usefulness in two kinds of situations is detected respectively and judged, evaluate the efficiency index of air conditioner operation.
Embodiment 1, the assessment method 1 of ventilation and air conditioning system usefulness, with reference to accompanying drawing 1.
In the present embodiment, the Design of Wnderground Powerhouse in power station is direct air intake, and air intake passage is not set, and does not therefore consider subterranean body nature amount of cooling water.
Assessment method of the present invention, first outside underground power house and air draft road junction set temperature meter, hygrometer and the air quantity monitor of ventilation and air conditioning system, be respectively used to measure temperature, humidity and the air quantity of present position, these three amounts are the measured datas for judging ventilation and air conditioning system usefulness, are also raw value sources.
The assessment method of the present embodiment specifically comprises the following steps:
S1, measures initial temperature T
1with initial humidity D
1, and calculate initial air enthalpy I
1.
Wherein, initial temperature T
1with initial humidity D
1refer to the temperature and humidity outside underground power house cavern, initial air enthalpy I
1be the air intake air enthalpy of underground power house cavern, initial air enthalpy I
1can be calculated by formula (1).
I
1=1.01T
1+（2500+1.84T
1）D
1 （1）
S2, measures outlet temperature T
2with outlet humidity D
2and calculate its outlet air enthalpy I
2.
Wherein, outlet temperature T
2with outlet humidity D
2refer to the temperature and humidity at the air draft road junction of ventilation and air conditioning system, outlet air enthalpy I
2for the air-out air enthalpy at ventilation and air conditioning system air draft road junction, outlet air enthalpy I
2can be calculated by formula (2).
I
2=1.01T
2+（2500+1.84T
2）D
2 （2）
S3, measures initial air quantity Q
1with outlet air quantity Q
2, and in conjunction with initial air enthalpy I
1with outlet air enthalpy I
2calculate ventilation heat F.
Wherein, initial air quantity Q
1refer to the intake outside underground power house cavern, outlet air quantity Q
2refer to the air output at ventilation and air conditioning system air draft road junction, Q under perfect condition
1=q
2, ventilation heat F
1can calculate by through type (3).
F
1=C×Q
1×（I
2—I
1） （3）
Wherein, C is air specific heat.
S4, obtains the refrigeration unit refrigerating capacity M of ventilation and air conditioning system and total wasted work rate W of ventilation and air conditioning system.The refrigerating capacity M of refrigeration unit and total power consumption rate W are the actual operating data of air conditioner, the refrigerating capacity M of refrigeration unit obtains according to the central control system demonstration of unit, and the actual power consumption of air conditioner equipment is obtained according to the measuring instrument in electric supply line.
S5, according to ventilation heat F
1, refrigeration unit refrigerating capacity M and total wasted work rate W judge the usefulness of described ventilation and air conditioning system, the usefulness A of ventilation and air conditioning system
1can calculate by through type (4).
A
1=（F
1+M）/W （4）
A
1the usefulness numerical value of the ventilation and air conditioning system that obtains the in the situation that of the direct air intake of underground workshop, do not need in this case to consider the impact of rock mass nature amount of cooling water, this numerical value combines aerial temperature and humidity parameter and the air output at hole outdoor temperature humidity parameter and intake and air draft road junction, can accurately judge operation (refrigeration) efficiency of ventilation and air conditioning system and the ratio of energy input by the calculating to these data and comparison, thereby pass judgment on the usefulness of ventilation and air conditioning system, this usefulness numerical value A
1can solely pass judgment on a ventilation and air conditioning system, also can gather the usefulness numerical value of the ventilation and air conditioning system of multiple underground workshops, and these usefulness numerical value are integrated and carry out globality judgement, thereby distinguish usefulness quality, for definite efficiency grade is established data basis.
The assessment method of the present embodiment is direct outdoor air intake, this situation also can be extended to, in the situation that having air inlet duct air intake (being non-direct outdoor air intake), do not take into account the temperature drop factor in air channel, the air themperature in employing air inlet duct exit and humidity are as the initial temperature T in the present embodiment
1with initial humidity D
1; That is to say, assessment method in the present embodiment also can be provided with for evaluation the usefulness of the ventilation and air conditioning system of the underground power house of air inlet duct, the evaluation of this usefulness does not take into account the impact in air channel, can be with unified Standard Judgement ventilation and air conditioning system the usefulness in underground power house part.
Embodiment 2, the assessment method 2 of usefulness, with reference to accompanying drawing 2.
In the present embodiment, outside the underground power house in power station, be designed with air inlet duct, outdoor air intake enters underground power house through air inlet duct, in air inlet duct, the natural cooling performance of subterranean body has been taken away the hot humidity load of a part of new wind, this part natural amount of cooling water also belongs to a part for the total heat extraction of ventilation and air conditioning system, therefore the ventilation and air conditioning system to this underground power house carry out usefulness detect time, count this part natural amount of cooling water.
The assessment method of the present embodiment specifically comprises the following steps:
S1, measures initial temperature T
1with initial humidity D
1, and calculate initial air enthalpy I
1.
Wherein, wherein, initial temperature T
1with initial humidity D
1refer to temperature and humidity outside underground power house cavern after air inlet duct is naturally cooling, initial air enthalpy I
1can be calculated by formula (1).
I
1=1.01T
1+（2500+1.84T
1）D
1 （1）
S2, measures outlet temperature T
2with outlet humidity D
2and calculate its outlet air enthalpy I
2.
Wherein, outlet temperature T
2with outlet humidity D
2refer to the temperature and humidity at the air draft road junction of ventilation and air conditioning system, outlet air enthalpy I
2for the air-out air enthalpy at ventilation and air conditioning system air draft road junction, outlet air enthalpy I
2can be calculated by formula (2).
I
2=1.01T
2+（2500+1.84T
2）D
2 （2）
S3, measures initial air quantity Q
1with outlet air quantity Q
2, and in conjunction with initial air enthalpy I
1with outlet air enthalpy I
2calculate ventilation heat F.
Wherein, initial air quantity Q
1refer to the intake outside underground power house cavern, outlet air quantity Q
2refer to the air output at ventilation and air conditioning system air draft road junction, Q under perfect condition
1=q
2, ventilation heat F
1can calculate by through type (3).
F
1=C×Q
1×（I
2—I
1） （3）
Wherein, C is air specific heat.
S4, the temperature T of mensuration air inlet duct porch
3with humidity D
3and calculate the air enthalpy I of porch
3.
In the present embodiment, need to corresponding thermometer, hygrometer be also set in the porch of air inlet duct, obtain temperature T according to the measurement result of Hygrothermograph
3with humidity D
3, air enthalpy I
3can be calculated by formula (5).
I
3=1.01T
3+（2500+1.84T
3）D
3 （5）
S5, the temperature T in mensuration air inlet duct exit
4with humidity D
4and calculate the air enthalpy I in exit
4.
In the present embodiment, need to corresponding thermometer, hygrometer be also set in the exit of air inlet duct, obtain temperature T according to the measurement result of Hygrothermograph
4with humidity D
4, air enthalpy I
4can be calculated by formula (6).
I
4=1.01T
4+（2500+1.84T
4）D
4 （6）
In theory, because distance outside the exit of air inlet duct and underground power house cavern approaches, the value of its temperature and humidity is also more approaching, therefore, and the temperature T in formula (6)
4with humidity D
4also can use respectively initial temperature T
1with initial humidity D
1substitute, do not need set temperature hygrometer to remeasure.
S6, the air quantity Q of mensuration air inlet duct porch
3air quantity Q with air inlet duct exit
4, Q under perfect condition
3=q
4, and in conjunction with air enthalpy I
3and I
4calculate air intake rock mass nature amount of cooling water F
2, air intake rock mass nature amount of cooling water F
2can calculate by through type (7).
F
2=C×Q
3×（I
3—I
4） （7）
Wherein, C is air specific heat.
S7, measures the refrigeration unit refrigerating capacity M of ventilation and air conditioning system and total wasted work rate W of ventilation and air conditioning system.
S8, according to ventilation heat F
1, air intake rock mass nature amount of cooling water F
2, refrigeration unit refrigerating capacity M and total wasted work rate W judge the usefulness of described ventilation and air conditioning system, the usefulness A of ventilation and air conditioning system
2can calculate by through type (8).
A
2=（F
1+ F
2+M）/W （8）
A
2the usefulness numerical value of the ventilation and air conditioning system that obtains air inlet duct in the situation that in design at underground workshop, need in this case to take into account the impact of rock mass nature amount of cooling water in air channel, this numerical value combines aerial temperature and humidity parameter and the air output at hole outdoor temperature humidity parameter and intake, the naturally cooled aerial temperature and humidity parameter of air inlet duct and air quantity and air draft road junction, can accurately obtain operation (refrigeration) efficiency of ventilation and air conditioning system and the ratio of energy input by the calculating to these numerical value and comparison, thereby pass judgment on the usefulness of ventilation and air conditioning system.This usefulness numerical value A
2can solely pass judgment on a ventilation and air conditioning system, also can gather the usefulness numerical value of the ventilation and air conditioning system of multiple underground workshops, and these usefulness numerical value are integrated and carry out globality judgement, thereby distinguish usefulness quality, for definite efficiency grade is established data basis.
Due to engineering difference, air inlet duct is subject to the restriction of objective condition, length difference, air intake is inhaled to thermal discharge difference naturally, therefore the air parameter entering is just different, and the not consumed power of suction heat release naturally of air inlet duct, can affect the evaluation of usefulness simultaneously, therefore the thermal discharge of naturally inhaling of air inlet duct is measured separately, can more objectively reflect the efficiency index of ventilation and air conditioning system.The temperature drop cold of air inlet duct is as a part for air conditioner refrigerating amount.
Claims (4)
1. the assessment method of underground power house ventilation and air conditioning system usefulness, is characterized in that: described efficiency assessment method outside underground power house and air draft road junction set temperature meter, hygrometer and the air quantity monitor of ventilation and air conditioning system, and comprises the following steps:
1) measure initial temperature T
1with initial humidity D
1and calculate initial air enthalpy I
1;
2) measure outlet temperature T
2with outlet humidity D
2and calculate its outlet air enthalpy I
2;
3) measure initial air quantity Q
1with outlet air quantity Q
2, and in conjunction with initial air enthalpy I
1with outlet air enthalpy I
2calculate ventilation heat;
4) obtain the refrigeration unit refrigerating capacity M of ventilation and air conditioning system and total wasted work rate W of ventilation and air conditioning system;
5) judge the usefulness of described ventilation and air conditioning system according to ventilation heat, refrigeration unit refrigerating capacity M and total wasted work rate W.
2. the assessment method of underground power house ventilation and air conditioning system usefulness as claimed in claim 1, is characterized in that: concerning the underground power house of direct air intake, described initial temperature and initial humidity refer to the temperature and humidity outside the cavern of underground power house; For the underground power house that air inlet duct is set, described initial temperature and initial humidity refer to through the temperature and humidity outside the naturally cooled underground power house of air inlet duct.
3. the assessment method of underground power house ventilation and air conditioning system usefulness as claimed in claim 1, is characterized in that: concerning the underground power house of direct air intake, described initial air quantity refers to the air quantity outside the cavern of underground power house; For the underground power house that air inlet duct is set, described initial air quantity refers to the air quantity outside the underground power house after air inlet duct.
4. the assessment method of underground power house ventilation and air conditioning system usefulness as claimed in claim 1, it is characterized in that: concerning the underground power house of air inlet duct is set, described assessment method also comprises the step of calculating air intake rock mass nature amount of cooling water, and the step of described calculating air intake rock mass nature amount of cooling water specifically comprises the following steps:
1) temperature T of mensuration air inlet duct porch
3with humidity D
3and calculate the air enthalpy I of porch
3;
2) temperature T in mensuration air inlet duct exit
4with humidity D
4and calculate the air enthalpy I of porch
4;
3) the air quantity Q of mensuration air inlet duct porch
3air quantity Q with air inlet duct exit
4, and in conjunction with air enthalpy I
3and I
4calculate air intake rock mass nature amount of cooling water.
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| CN201410354726.5A CN104089379A (en) | 2014-07-24 | 2014-07-24 | Method for assessing efficiency of underground powerhouse ventilating and air conditioning system |
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Cited By (6)
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| CN107178871A (en) * | 2017-05-09 | 2017-09-19 | 广东美的制冷设备有限公司 | Air conditioner and its refrigerating capacity acquisition methods and computer-readable recording medium |
| CN109210701A (en) * | 2018-08-28 | 2019-01-15 | 珠海格力电器股份有限公司 | A kind of air conditioner management method, system and computer readable storage medium |
| CN109297156A (en) * | 2018-12-07 | 2019-02-01 | 北京北特圣迪科技发展有限公司 | A kind of air conditioner system control method |
| CN110332656A (en) * | 2019-07-25 | 2019-10-15 | 南方电网调峰调频发电有限公司 | A kind of underground power station power house ventilation air-conditioning system and its progress control method |
| CN111311071A (en) * | 2020-01-20 | 2020-06-19 | 天津卓朗科技发展有限公司 | Equipment energy consumption management method and device and electronic equipment |
| CN114110936A (en) * | 2017-08-31 | 2022-03-01 | 广东美的制冷设备有限公司 | Air conditioner and energy efficiency calculation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107178871A (en) * | 2017-05-09 | 2017-09-19 | 广东美的制冷设备有限公司 | Air conditioner and its refrigerating capacity acquisition methods and computer-readable recording medium |
| CN114110936A (en) * | 2017-08-31 | 2022-03-01 | 广东美的制冷设备有限公司 | Air conditioner and energy efficiency calculation method thereof |
| CN109210701A (en) * | 2018-08-28 | 2019-01-15 | 珠海格力电器股份有限公司 | A kind of air conditioner management method, system and computer readable storage medium |
| CN109297156A (en) * | 2018-12-07 | 2019-02-01 | 北京北特圣迪科技发展有限公司 | A kind of air conditioner system control method |
| CN110332656A (en) * | 2019-07-25 | 2019-10-15 | 南方电网调峰调频发电有限公司 | A kind of underground power station power house ventilation air-conditioning system and its progress control method |
| CN111311071A (en) * | 2020-01-20 | 2020-06-19 | 天津卓朗科技发展有限公司 | Equipment energy consumption management method and device and electronic equipment |
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Application publication date: 20141008 |