CN111413117A - Test system based on inverse temperature working condition of water-cooling water chilling unit - Google Patents
Test system based on inverse temperature working condition of water-cooling water chilling unit Download PDFInfo
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- CN111413117A CN111413117A CN202010169867.5A CN202010169867A CN111413117A CN 111413117 A CN111413117 A CN 111413117A CN 202010169867 A CN202010169867 A CN 202010169867A CN 111413117 A CN111413117 A CN 111413117A
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Abstract
The invention discloses a test system based on the inverse temperature working condition of a water-cooled chiller, which is provided with a condenser water TANK TANK1 and an evaporator water TANK TANK2, wherein the inverse temperature working condition of the chiller is realized by adding low-temperature water in the condenser water TANK TANK1 into a condenser CO of a test prototype and adding high-temperature water in the evaporator water TANK TANK2 into an evaporator EV of the test prototype; the temperature of water in the water TANK of the condenser is kept lower than the water inlet temperature T1 of the condenser CO of the test prototype by using the evaporation cold energy of the working condition unit evaporator WCEV in the working condition unit, and the temperature of the water in the water TANK of the evaporator TANK2 is kept higher than the water inlet temperature T4 of the evaporator EV of the test prototype by using the output heat of the heater H1 or the condensation heat of the working condition unit condenser WCCO in the working condition unit, so that the continuation of the temperature inversion working condition is ensured. The invention can carry out simulation experiment of inverse temperature working condition on the test unit, and realize the test of the performance of the water-cooling water chilling unit under the inverse temperature working condition.
Description
Technical Field
The invention relates to the technical field of water chilling unit testing, in particular to a testing system based on the inverse temperature working condition of a water chilling unit.
Background
The water-cooling water chilling unit is widely applied to production and construction of various industries, and has already provided corresponding technical conditions for year-round refrigeration operation of the water-cooling water chilling unit along with rapid development of the water-cooling water chilling unit technology. During the refrigeration operation of the water-cooling water chiller in winter, the following working conditions are very likely to occur: the water outlet temperature of the evaporator is equal to or higher than the water inlet temperature of the condenser, the water inlet temperature of the evaporator is equal to or higher than the water outlet temperature of the condenser, and the working condition is the inverse temperature working condition.
For example, a processing plant for cultivating bean sprouts can require that a bean sprout cultivation pool is always maintained at 28 degrees, a water-cooling water chilling unit is used for cooling the cultivation pool in winter, the water inlet temperature of an evaporator is 28 degrees, the water outlet temperature is 23 degrees, and the water inlet temperature of a condenser is 20 degrees and the water outlet temperature is 26 degrees due to the fact that the processing plant is used in winter, so that the inverse temperature working condition is generated, and then the performance of the water-cooling water chilling unit under the inverse temperature working condition needs to be known for the bean sprout processing plant so as to determine whether to purchase the water-cooling water chilling unit.
However, the conventional water-cooling water chiller testing system cannot realize the simulation experiment of the inverse temperature working condition, so that the performance of the water-cooling water chiller cannot be tested under the inverse temperature working condition.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a test system based on the inverse temperature working condition of a water-cooling water chilling unit, which can perform a simulation experiment of the inverse temperature working condition on the test unit and realize the performance test of the water-cooling water chilling unit under the inverse temperature working condition.
In order to achieve the purpose, the invention adopts the following technical scheme that:
a test system based on the inverse temperature working condition of a water-cooling water chilling unit is disclosed, wherein the inverse temperature working condition is as follows: the water inlet temperature of the evaporator is equal to or higher than the water outlet temperature of the condenser, and the water outlet temperature of the evaporator is equal to or higher than the water inlet temperature of the condenser;
the test system comprises: condenser water TANK 1; testing a cooling water PUMP PUMP2 of a prototype; a condenser water replenishing PUMP 3; evaporator TANK 2; testing a sample machine chilled water PUMP PUMP 1; an evaporator make-up PUMP 4; the testing unit comprises a testing prototype condenser CO and a testing prototype evaporator EV;
the water in the condenser water TANK TANK1 is low-temperature water, and the temperature of the water is lower than the water inlet temperature T1 of the condenser CO of the test sample machine;
the water inlet of the condenser water TANK TANK1 is connected with the water outlet of the condenser CO of the test prototype; the water outlet of the condenser water TANK TANK1 is connected with the water inlet of a condenser water replenishing PUMP PUMP 3;
the water outlet of the test prototype cooling water PUMP PUMP2 is connected with the water inlet of the test prototype condenser CO, and the water inlet flow F1 of the test prototype condenser CO is controlled by adjusting the test prototype cooling water PUMP PUMP 2;
the water inlet of the cooling water PUMP PUMP2 of the test prototype is respectively connected with the water outlet of the water replenishing PUMP PUMP3 of the condenser and the water outlet of the condenser CO of the test prototype, and the water in the condenser water TANK TANK1 and the effluent of the condenser CO of the test prototype are mixed and added into the condenser CO of the test prototype;
the low-temperature water adding amount of the condenser CO of the test prototype is controlled by adjusting a condenser water supplementing PUMP PUMP3, so that the water inlet temperature T1 of the condenser CO of the test prototype is controlled;
the water in the evaporator water TANK TANK2 is high-temperature water, and the temperature of the high-temperature water is higher than the water inlet temperature T4 of the evaporator EV of the test sample machine;
the water inlet of the evaporator water TANK TANK2 is connected with the water outlet of the evaporator EV of the test prototype; the water outlet of the evaporator water TANK TANK2 is connected with the water inlet of an evaporator water replenishing PUMP PUMP 4;
the water outlet of the test prototype chilled water PUMP PUMP1 is connected with the water inlet of the test prototype evaporator EV, and the water inlet flow F2 of the test prototype evaporator EV is controlled by adjusting the test prototype chilled water PUMP PUMP 1;
the water inlet of the test prototype chilled water PUMP PUMP1 is respectively connected with the water outlet of the evaporator water replenishing PUMP PUMP4 and the water outlet of the test prototype evaporator EV, and the high-temperature water in the evaporator water TANK TANK2 and the outlet water of the test prototype evaporator EV are mixed and added into the test prototype evaporator EV;
and controlling the high-temperature water adding amount of the evaporator EV of the test prototype by adjusting the water replenishing PUMP PUMP4 of the evaporator, thereby controlling the water inlet temperature T4 of the evaporator EV of the test prototype.
The test system further comprises: the working condition unit evaporator water PUMP PUMP 5; a working condition unit evaporator WCEV in the working condition unit;
the water outlet of the working condition unit evaporator WCEV is connected with the water inlet of a condenser water TANK TANK 1; the water inlet of the working condition unit evaporator WCEV is connected with the water outlet of a working condition unit evaporator water PUMP PUMP 5; a water inlet of the working condition unit evaporator water PUMP PUMP5 is connected with a water outlet of the condenser water TANK TANK 1;
the connection among the working condition unit evaporator WCEV, the working condition unit evaporator water PUMP PUMP5 and the condenser water TANK TANK1 is adopted to balance the condensation heat brought to the condenser water TANK TANK1 by the outlet water of the condenser CO of the test prototype.
A working condition unit condenser WCCO is also arranged in the working condition unit; the test system further comprises: a cooling TOWER TOWER and a working condition unit condenser water PUMP PUMP 6;
a water outlet of the condenser WCCO of the working condition unit is connected with a water inlet of the cooling TOWER TOWER; the water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; the water inlet of the working condition unit condenser water PUMP PUMP6 is connected with the water outlet of the cooling TOWER TOWER;
and the redundant energy of the test system is dissipated through the connection among the cooling TOWER TOWER, the working condition unit condenser water PUMP PUMP6 and the working condition unit condenser WCCO.
The evaporator water TANK TANK2 is internally provided with a heater H1, and the output heat quantity of the heater H1 is controlled to balance the evaporation cold quantity brought to the evaporator water TANK TANK2 by the effluent of the evaporator EV of the test prototype.
A working condition unit condenser WCCO is also arranged in the working condition unit; the test system further comprises: a cooling TOWER TOWER, a working condition unit condenser water PUMP PUMP6 and a cooling TOWER circulating water PUMP PUMP 7;
the water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; a water inlet of a condenser water PUMP PUMP6 of the working condition unit is connected with a water outlet of an evaporator water TANK TANK 2; the water outlet of the working condition unit condenser WCCO is connected with the water inlet of the evaporator water TANK TANK 2;
the water outlet of the evaporator water TANK TANK2 is connected with the water inlet of a cooling tower circulating water PUMP PUMP 7; the water outlet of the cooling TOWER circulating water PUMP PUMP7 is connected with the water inlet of the cooling TOWER TOWER; the water outlet of the cooling TOWER TOWER is connected with the water inlet of an evaporator water TANK TANK 2;
by connecting the working condition unit condenser WCCO, the working condition unit condenser water PUMP PUMP6 and the evaporator water TANK TANK2, the condensation heat of the working condition unit condenser WCCO is used for heating the evaporator water TANK TANK2, so that the evaporation cold quantity brought to the evaporator water TANK TANK2 by the effluent water of the evaporator EV of the test prototype is balanced; the evaporator water TANK TANK2 is cooled through the connection among the evaporator water TANK TANK2, the cooling TOWER circulating water PUMP PUMP7 and the cooling TOWER TOWER.
A working condition unit condenser WCCO is also arranged in the working condition unit; the test system further comprises: a cooling TOWER TOWER and a working condition unit condenser water PUMP PUMP 6;
the water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; a water inlet of a condenser water PUMP PUMP6 of the working condition unit is connected with a water outlet of an evaporator water TANK TANK 2; a water outlet of the condenser WCCO of the working condition unit is connected with a water inlet of the cooling TOWER TOWER; the water outlet of the cooling TOWER TOWER is connected with the water inlet of an evaporator water TANK TANK 2;
through the connection among the working condition unit condenser WCCO, the working condition unit condenser water PUMP PUMP6, the evaporator water TANK TANK2 and the cooling TOWER TOWER, the condensation heat of the working condition unit condenser WCCO is heated for the evaporator water TANK TANK2, so that the evaporation cold quantity brought to the evaporator water TANK TANK2 by the outlet water of the test prototype evaporator EV is balanced.
The method is characterized in that the water inlet temperature of an evaporator water TANK TANK2 is controlled by adjusting the rotating speed of a fan of a cooling TOWER TOWER.
The invention has the advantages that:
(1) the temperature reversal working condition of the testing unit is realized by arranging a condenser water TANK TANK1 and an evaporator water TANK TANK2, adding low-temperature water in the condenser water TANK TANK1 into a condenser CO of a testing prototype, and adding high-temperature water in the evaporator water TANK TANK2 into an evaporator EV of the testing prototype.
(2) Connecting a working condition unit evaporator WCEV with a condenser water TANK TANK1, balancing condensation heat brought to the condenser water TANK TANK1 by outlet water of a test prototype condenser CO by using evaporation cold energy of the working condition unit evaporator WCEV, and keeping the temperature of the water in the condenser water TANK lower than the inlet water temperature T1 of the test prototype condenser CO, thereby ensuring the continuation of the temperature reversal working condition; the heat dissipation mode of the condenser water TANK TANK1 of the invention is more energy-saving. And moreover, the condensation heat of the WCCO of the condenser of the working condition unit is dissipated by utilizing the TOWER of the cooling TOWER, so that the redundant energy of the test system is dissipated.
(3) The heater H1 is installed in the evaporator water TANK TANK2, the output heat of the heater H1 is utilized to balance the evaporation cold quantity brought to the evaporator water TANK TANK2 by the outlet water of the evaporator EV under test, the temperature of the water in the evaporator water TANK TANK2 is kept higher than the inlet water temperature T4 of the evaporator EV under test, and therefore the continuation of the inverse temperature working condition is guaranteed.
(4) Connecting a working condition unit condenser WCCO with an evaporator water TANK TANK2, balancing evaporation cold quantity brought to the evaporator water TANK TANK2 by outlet water of a test prototype evaporator EV by using condensation heat of the working condition unit condenser WCCO, and keeping the temperature of the water in the evaporator water TANK TANK2 higher than the inlet water temperature T4 of the test prototype evaporator EV so as to ensure the continuation of an inverse temperature working condition; the heating mode of the evaporator water TANK TANK2 is more energy-saving. Simultaneously, utilize cooling TOWER TOWER to dissipate the unnecessary energy of dissipation test system, through the fan rotational speed of adjusting cooling TOWER TOWER to the temperature of intaking of control evaporimeter water TANK TANK 2.
(5) The water pump is designed on the water inlet and outlet pipeline, so that the adjustability of the test system is improved.
Drawings
Fig. 1 is a schematic diagram of a test system according to a first embodiment of the invention.
Fig. 2 is a schematic diagram of a test system according to a second embodiment of the invention.
Fig. 3 is a schematic diagram of a test system according to a third embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Before describing the invention in detail, a brief explanation of some concepts involved in the invention will first be given:
when the water-cooled water chilling unit works, the water inlet temperature of the condenser is lower than the water outlet temperature of the condenser; the water inlet temperature of the evaporator is higher than the water outlet temperature of the evaporator.
The inverse temperature working condition is as follows: the water inlet temperature of the evaporator is equal to or higher than the water outlet temperature of the condenser, and the water outlet temperature of the evaporator is equal to or higher than the water inlet temperature of the condenser.
In order to test the performance of the water-cooled chiller unit under the inverse temperature working condition, the invention designs a test system based on the inverse temperature working condition of the water-cooled chiller unit, which is shown in fig. 1, 2 or 3 and comprises the following components:
the testing unit is provided with a testing prototype condenser CO and a testing prototype evaporator EV;
the condenser water TANK TANK1, the water in the condenser water TANK TANK1 is low temperature water, the temperature is lower than the water inlet temperature T1 of the condenser CO of the test prototype; the water inlet of the condenser water TANK TANK1 is connected with the water outlet of the condenser CO of the test prototype; the water outlet of the condenser water TANK TANK1 is connected with the water inlet of a condenser water replenishing PUMP PUMP 3;
the testing prototype cooling water PUMP PUMP2, the water outlet of the testing prototype cooling water PUMP PUMP2 is connected with the water inlet of the testing prototype condenser CO, and the water inlet flow F1 of the testing prototype condenser CO is controlled by adjusting the testing prototype cooling water PUMP PUMP 2; the water inlet of the cooling water PUMP PUMP2 of the test prototype is respectively connected with the water outlet of the water replenishing PUMP PUMP3 of the condenser and the water outlet of the condenser CO of the test prototype, and the low-temperature water in the condenser water TANK TANK1 and the outlet water of the condenser CO of the test prototype are mixed and added into the condenser CO of the test prototype;
the condenser water replenishing PUMP PUMP3 controls the low-temperature water adding amount of the test prototype condenser CO by adjusting the condenser water replenishing PUMP PUMP3, so that the water inlet temperature T1 of the test prototype condenser CO is controlled, the water inlet temperature T1 of the test prototype condenser CO is lower than or equal to the water outlet temperature T3 of the test prototype evaporator EV, and the inverse temperature working condition is met;
and calculating the heat exchange quantity of the test prototype condenser CO according to the water inlet flow F1 and the water inlet temperature T1 of the test prototype condenser CO obtained by monitoring at the water inlet of the test prototype condenser CO and the water outlet temperature T2 of the test prototype condenser CO obtained by monitoring at the water outlet of the test prototype condenser CO, wherein the water inlet and outlet pressure difference of cooling water in the test prototype condenser CO is △ P2.
The water in the evaporator water TANK TANK2 and TANK2 is high-temperature water, and the temperature of the high-temperature water is higher than the water inlet temperature T4 of the evaporator EV of the test sample machine; the water inlet of the evaporator water TANK TANK2 is connected with the water outlet of the evaporator EV of the test prototype; the water outlet of the evaporator water TANK TANK2 is connected with the water inlet of an evaporator water replenishing PUMP PUMP 4;
the testing model machine frozen water PUMP PUMP1, the water outlet of the testing model machine frozen water PUMP PUMP1 is connected with the water inlet of the testing model machine evaporator EV, and the water inlet flow F2 of the testing model machine evaporator EV is controlled by adjusting the testing model machine frozen water PUMP PUMP 1; the water inlet of the test prototype chilled water PUMP PUMP1 is respectively connected with the water outlet of the evaporator water replenishing PUMP PUMP4 and the water outlet of the test prototype evaporator EV, and the high-temperature water in the evaporator water TANK TANK2 and the outlet water of the test prototype evaporator EV are mixed and added into the test prototype evaporator EV;
the evaporator water replenishing PUMP PUMP4 controls the high-temperature water adding amount of the test prototype evaporator EV by adjusting the evaporator water replenishing PUMP PUMP4, so as to control the water inlet temperature T4 of the test prototype evaporator EV, ensure that the water inlet temperature T4 of the test prototype evaporator EV is equal to or higher than the water outlet temperature T2 of the test prototype condenser CO, and meet the temperature inversion working condition;
and calculating the heat exchange quantity of the test prototype evaporator EV according to the water inlet flow F2 and the water inlet temperature T4 of the test prototype evaporator EV obtained by monitoring the water inlet of the test prototype evaporator EV and the water outlet temperature T3 of the test prototype evaporator EV obtained by monitoring the water outlet of the test prototype evaporator EV, wherein the water inlet and outlet pressure difference of the frozen water in the test prototype evaporator EV is △ P2.
In order to realize that the water temperature in the condenser water TANK TANK1 is always lower than the water inlet temperature T1 of a test prototype condenser CO and the water temperature in the evaporator water TANK TANK2 is always higher than the water inlet temperature T4 of a test prototype evaporator EV, the invention provides the following three embodiments:
the first embodiment is as follows:
as shown in fig. 1, the test system further includes: the working condition unit evaporator water PUMP PUMP 5; a heater H1; a cooling TOWER TOWER; a working condition unit condenser water PUMP PUMP 6; the working condition unit comprises a working condition unit condenser WCCO and a working condition unit evaporator WCEV.
The water outlet of the working condition unit evaporator WCEV is connected with the water inlet of a condenser water TANK TANK 1; the water inlet of the working condition unit evaporator WCEV is connected with the water outlet of a working condition unit evaporator water PUMP PUMP 5; a water inlet of the working condition unit evaporator water PUMP PUMP5 is connected with a water outlet of the condenser water TANK TANK 1;
because the water inlet temperature of the working condition unit evaporator WCEV is higher than the water outlet temperature of the working condition unit evaporator WCEV when the working condition unit works, the condensation heat brought to the condenser water TANK TANK1 by the water outlet of the condenser CO of the test prototype is balanced by the connection among the working condition unit evaporator WCEV, the working condition unit evaporator water PUMP PUMP5 and the condenser water TANK TANK1, so that the water temperature in the condenser water TANK TANK1 is always lower than the water inlet temperature T1 of the condenser CO of the test prototype, and the temperature required by the inverse temperature working condition test is reached.
The heater H1 is arranged in the evaporator water TANK TANK2, and the temperature of water in the evaporator water TANK TANK2 is adjusted by controlling the output heat of the heater H1, so that the evaporation cold quantity brought to the evaporator water TANK TANK2 by the outlet water of the evaporator EV of the test prototype is balanced, the temperature of water in the evaporator water TANK TANK2 is always higher than the inlet water temperature T4 of the evaporator EV of the test prototype, and the temperature required by the inverse temperature working condition test is reached.
A water outlet of the condenser WCCO of the working condition unit is connected with a water inlet of the cooling TOWER TOWER; the water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; the water inlet of the working condition unit condenser water PUMP PUMP6 is connected with the water outlet of the cooling TOWER TOWER;
and the redundant energy of the test system is dissipated through the connection among the cooling TOWER TOWER, the working condition unit condenser water PUMP PUMP6 and the working condition unit condenser WCCO.
Example two:
as shown in fig. 2, the test system further includes: the working condition unit evaporator water PUMP PUMP 5; a cooling TOWER TOWER; a working condition unit condenser water PUMP PUMP 6; a cooling tower circulating water PUMP PUMP 7; the working condition unit comprises a working condition unit condenser WCCO and a working condition unit evaporator WCEV.
The water outlet of the working condition unit evaporator WCEV is connected with the water inlet of a condenser water TANK TANK 1; the water inlet of the working condition unit evaporator WCEV is connected with the water outlet of a working condition unit evaporator water PUMP PUMP 5; a water inlet of the working condition unit evaporator water PUMP PUMP5 is connected with a water outlet of the condenser water TANK TANK 1;
because the water inlet temperature of the working condition unit evaporator WCEV is higher than the water outlet temperature of the working condition unit evaporator WCEV when the working condition unit works, the condensation heat brought to the condenser water TANK TANK1 by the water outlet of the condenser CO of the test prototype is balanced by the connection among the working condition unit evaporator WCEV, the working condition unit evaporator water PUMP PUMP5 and the condenser water TANK TANK1, so that the water temperature in the condenser water TANK TANK1 is always lower than the water inlet temperature T1 of the condenser CO of the test prototype, and the temperature required by the inverse temperature working condition test is reached.
The water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; a water inlet of a condenser water PUMP PUMP6 of the working condition unit is connected with a water outlet of an evaporator water TANK TANK 2; the water outlet of the working condition unit condenser WCCO is connected with the water inlet of the evaporator water TANK TANK 2;
in addition, the water outlet of the evaporator water TANK TANK2 is connected with the water inlet of a cooling tower circulating water PUMP PUMP 7; the water outlet of the cooling TOWER circulating water PUMP PUMP7 is connected with the water inlet of the cooling TOWER TOWER; the water outlet of the cooling TOWER TOWER is connected with the water inlet of an evaporator water TANK TANK 2;
because the water inlet temperature of the working condition unit condenser WCCO is lower than the water outlet temperature of the working condition unit condenser WCCO when the working condition unit works, the condensation heat of the working condition unit condenser WCCO is heated for the evaporator water TANK TANK2 through the connection among the working condition unit condenser WCCO, the working condition unit condenser water PUMP PUMP6 and the evaporator water TANK TANK2, so that the evaporation cold quantity brought to the evaporator water TANK TANK2 by the water outlet of the test prototype evaporator EV is balanced; in addition, the evaporator water TANK TANK2 is radiated through the connection among the evaporator water TANK TANK2, the cooling TOWER circulating water PUMP PUMP7 and the cooling TOWER TOWER; the water inlet temperature of an evaporator water TANK TANK2 is controlled by adjusting the rotating speed of a fan of a cooling TOWER TOWER; finally, the water temperature in the evaporator water TANK TANK2 is always higher than the water inlet temperature T4 of the test sample evaporator EV, and the temperature required by the inverse temperature working condition test is reached.
Example three:
as shown in fig. 3, the test system further includes: the working condition unit evaporator water PUMP PUMP 5; a cooling TOWER TOWER; a working condition unit condenser water PUMP PUMP 6; the working condition unit comprises a working condition unit condenser WCCO and a working condition unit evaporator WCEV.
The water outlet of the working condition unit evaporator WCEV is connected with the water inlet of a condenser water TANK TANK 1; the water inlet of the working condition unit evaporator WCEV is connected with the water outlet of a working condition unit evaporator water PUMP PUMP 5; a water inlet of the working condition unit evaporator water PUMP PUMP5 is connected with a water outlet of the condenser water TANK TANK 1;
because the water inlet temperature of the working condition unit evaporator WCEV is higher than the water outlet temperature of the working condition unit evaporator WCEV when the working condition unit works, the condensation heat brought to the condenser water TANK TANK1 by the water outlet of the condenser CO of the test prototype is balanced by the connection among the working condition unit evaporator WCEV, the working condition unit evaporator water PUMP PUMP5 and the condenser water TANK TANK1, so that the water temperature in the condenser water TANK TANK1 is always lower than the water inlet temperature T1 of the condenser CO of the test prototype, and the temperature required by the inverse temperature working condition test is reached.
The water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; a water inlet of a condenser water PUMP PUMP6 of the working condition unit is connected with a water outlet of an evaporator water TANK TANK 2; a water outlet of the condenser WCCO of the working condition unit is connected with a water inlet of the cooling TOWER TOWER; the water outlet of the cooling TOWER TOWER is connected with the water inlet of an evaporator water TANK TANK 2;
because the water inlet temperature of the working condition unit condenser WCCO is lower than the water outlet temperature of the working condition unit condenser WCCO when the working condition unit works, the condensation heat of the working condition unit condenser WCCO is heated for the evaporator water TANK TANK2 through the connection among the working condition unit condenser WCCO, the working condition unit condenser water PUMP PUMP6, the evaporator water TANK TANK2 and the cooling TOWER TOWER, so that the evaporation cold quantity brought to the evaporator water TANK TANK2 by the water outlet of the test prototype evaporator EV is balanced; in addition, the water inlet temperature of the evaporator water TANK TANK2 is controlled by adjusting the rotating speed of a fan of the cooling TOWER TOWER; finally, the water temperature in the evaporator water TANK TANK2 is always higher than the water inlet temperature of the evaporator EV of the test prototype, and the temperature required by the temperature inversion working condition test is reached.
In the invention, the frequency converter is used for adjusting the rotating speed of a water pump valve or a fan.
Take the technical problem proposed in the background art as an example: the processing factory of breeding the bean sprouts can require the bean sprouts to cultivate the pond and maintain at 28 degrees all the time, uses the water-cooling water set for cultivating the pond cooling in winter, and the temperature of intaking of evaporimeter is 28 degrees, and the leaving water temperature is 23 degrees, because use in winter, the temperature of intaking of condenser is 20 degrees, and the leaving water temperature is 26 degrees. By utilizing the simulation experiment of the inverse temperature working condition, the temperature of the water in the condenser water TANK TANK1 can be adjusted to be lower than 20 ℃ by any one of the first embodiment, the second embodiment and the third embodiment, the temperature of the water in the evaporator water TANK TANK2 is higher than 28 ℃, and the simulation process is as follows:
when the testing unit operates, the inlet water temperature of the condenser EV of the testing prototype is 20 ℃, the outlet water temperature is 26 ℃, the inlet water temperature of the evaporator CO of the testing prototype is 28 ℃, and the outlet water temperature is 23 ℃.
And part of the water at 26 ℃ of the test prototype condenser EV is mixed with the water in the condenser water TANK TANK1, and flows to the water inlet of the test prototype condenser EV after mixing, because the water temperature in the condenser water TANK TANK1 is lower than 20 ℃, and the water at 18 ℃ is supposed to be 18 ℃, the water at 20 ℃ can be obtained by mixing the water at 18 ℃ with the water at 26 ℃ and adjusting the mixing proportion through a condenser water replenishing PUMP PUMP3, and the water inlet temperature of the test prototype condenser EV is ensured to be 20 ℃.
Another part of the 26-degree outlet water of the condenser EV of the test sample flows into the condenser water TANK1, since the water of 26 degrees enters the condenser TANK1, which originally has a water temperature of 18 degrees, the water temperature in the condenser TANK1 rises, assuming that the rise is 22 degrees, in order to ensure that the temperature of water in a condenser water TANK TANK1 can be continuously maintained at 18 ℃, the evaporation cold quantity of a working condition unit evaporator WCEV in a working condition unit is utilized for balancing, 22-DEG water after the temperature in the condenser water TANK TANK1 is increased flows into a water inlet of the working condition unit evaporator WCEV, the water inlet temperature of the working condition unit evaporator WCEV is 22 ℃, the water outlet temperature is 14 ℃, 14-DEG effluent of the working condition unit evaporator WCEV flows back to the condenser water TANK TANK1, and the water inlet flow is regulated by a working condition unit evaporator water PUMP PUMP5, therefore, the 14-degree water outlet flow of the working condition unit evaporator WCEV is controlled, and finally the water temperature in the condenser water TANK TANK1 can be continuously maintained at 18 degrees.
Part of the 23-degree outlet water of the test prototype evaporator CO is mixed with the water in the evaporator water TANK TANK2, and flows to the water inlet of the test prototype evaporator CO after mixing, because the water temperature in the evaporator water TANK TANK2 is higher than 28 degrees, and if the temperature is 32 degrees, the water with the temperature of 32 degrees and the water with the temperature of 23 degrees are mixed, and the mixing proportion is adjusted through an evaporator water replenishing PUMP PUMP4, so that the water with the temperature of 28 degrees can be obtained through mixing, and the temperature of the inlet water of the test prototype evaporator CO is ensured to be 28 degrees.
The other part of the outlet water with 23 ℃ of the test prototype evaporator CO flows into an evaporator water TANK TANK2, because the water with 23 ℃ enters the evaporator water TANK TANK2 with the original water temperature of 32 ℃, the water temperature in the evaporator water TANK TANK2 is reduced, if the water temperature is reduced to 27 ℃, in order to ensure that the water temperature in the evaporator water TANK TANK2 can be continuously maintained at 32 ℃, the embodiment firstly utilizes a heater to heat the water in the evaporator water TANK TANK2, the embodiment secondly and thirdly utilizes the condensation heat of a working condition unit condenser WCCO in a working condition unit to balance, the 27 ℃ water with the reduced temperature in the evaporator water TANK TANK2 flows into the water inlet of the working condition unit condenser WCCO, the inlet water temperature of the working condition unit condenser WCCO is 27 ℃, the outlet water temperature is 36 ℃, the 36 ℃ outlet water of the working condition unit condenser WCCO flows back to the evaporator water TANK TANK2, and passes through a cooling TOWER TOWER, a unit condenser PUMP6, even a circulating water PUMP of the cooling TOWER 7 to adjust the working condition of the working condition TANK TANK2 of the evaporator water, finally, the water temperature in the evaporator water TANK TANK2 can be continuously maintained at 32 degrees.
The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A test system based on the inverse temperature working condition of a water-cooling water chilling unit is disclosed, wherein the inverse temperature working condition is as follows: the water inlet temperature of the evaporator is equal to or higher than the water outlet temperature of the condenser, and the water outlet temperature of the evaporator is equal to or higher than the water inlet temperature of the condenser; it is characterized in that the preparation method is characterized in that,
the test system comprises: condenser water TANK 1; testing a cooling water PUMP PUMP2 of a prototype; a condenser water replenishing PUMP 3; evaporator TANK 2; testing a sample machine chilled water PUMP PUMP 1; an evaporator make-up PUMP 4; the testing unit comprises a testing prototype condenser CO and a testing prototype evaporator EV;
the water in the condenser water TANK TANK1 is low-temperature water, and the temperature of the water is lower than the water inlet temperature T1 of the condenser CO of the test sample machine;
the water inlet of the condenser water TANK TANK1 is connected with the water outlet of the condenser CO of the test prototype; the water outlet of the condenser water TANK TANK1 is connected with the water inlet of a condenser water replenishing PUMP PUMP 3;
the water outlet of the test prototype cooling water PUMP PUMP2 is connected with the water inlet of the test prototype condenser CO, and the water inlet flow F1 of the test prototype condenser CO is controlled by adjusting the test prototype cooling water PUMP PUMP 2;
the water inlet of the cooling water PUMP PUMP2 of the test prototype is respectively connected with the water outlet of the water replenishing PUMP PUMP3 of the condenser and the water outlet of the condenser CO of the test prototype, and the water in the condenser water TANK TANK1 and the effluent of the condenser CO of the test prototype are mixed and added into the condenser CO of the test prototype;
the low-temperature water adding amount of the condenser CO of the test prototype is controlled by adjusting a condenser water supplementing PUMP PUMP3, so that the water inlet temperature T1 of the condenser CO of the test prototype is controlled;
the water in the evaporator water TANK TANK2 is high-temperature water, and the temperature of the high-temperature water is higher than the water inlet temperature T4 of the evaporator EV of the test sample machine;
the water inlet of the evaporator water TANK TANK2 is connected with the water outlet of the evaporator EV of the test prototype; the water outlet of the evaporator water TANK TANK2 is connected with the water inlet of an evaporator water replenishing PUMP PUMP 4;
the water outlet of the test prototype chilled water PUMP PUMP1 is connected with the water inlet of the test prototype evaporator EV, and the water inlet flow F2 of the test prototype evaporator EV is controlled by adjusting the test prototype chilled water PUMP PUMP 1;
the water inlet of the test prototype chilled water PUMP PUMP1 is respectively connected with the water outlet of the evaporator water replenishing PUMP PUMP4 and the water outlet of the test prototype evaporator EV, and the high-temperature water in the evaporator water TANK TANK2 and the outlet water of the test prototype evaporator EV are mixed and added into the test prototype evaporator EV;
and controlling the high-temperature water adding amount of the evaporator EV of the test prototype by adjusting the water replenishing PUMP PUMP4 of the evaporator, thereby controlling the water inlet temperature T4 of the evaporator EV of the test prototype.
2. The system of claim 1, wherein the system further comprises: the working condition unit evaporator water PUMP PUMP 5; a working condition unit evaporator WCEV in the working condition unit;
the water outlet of the working condition unit evaporator WCEV is connected with the water inlet of a condenser water TANK TANK 1; the water inlet of the working condition unit evaporator WCEV is connected with the water outlet of a working condition unit evaporator water PUMP PUMP 5; a water inlet of the working condition unit evaporator water PUMP PUMP5 is connected with a water outlet of the condenser water TANK TANK 1;
the connection among the working condition unit evaporator WCEV, the working condition unit evaporator water PUMP PUMP5 and the condenser water TANK TANK1 is adopted to balance the condensation heat brought to the condenser water TANK TANK1 by the outlet water of the condenser CO of the test prototype.
3. The system for testing the inverse temperature working condition of the water-cooled chiller according to claim 2, wherein a working condition unit condenser WCCO is further arranged in the working condition unit; the test system further comprises: a cooling TOWER TOWER and a working condition unit condenser water PUMP PUMP 6;
a water outlet of the condenser WCCO of the working condition unit is connected with a water inlet of the cooling TOWER TOWER; the water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; the water inlet of the working condition unit condenser water PUMP PUMP6 is connected with the water outlet of the cooling TOWER TOWER;
and the redundant energy of the test system is dissipated through the connection among the cooling TOWER TOWER, the working condition unit condenser water PUMP PUMP6 and the working condition unit condenser WCCO.
4. The system for testing the temperature reversion operating condition of the water-cooled chiller unit according to claim 1, 2 or 3, is characterized in that a heater H1 is installed in the evaporator water TANK TANK2, and the evaporation cold brought to the evaporator water TANK TANK2 from the outlet water of the test prototype evaporator EV is balanced by controlling the output heat quantity of the heater H1.
5. The system for testing the inverse temperature working condition of the water-cooled chiller according to claim 2, wherein a working condition unit condenser WCCO is further arranged in the working condition unit; the test system further comprises: a cooling TOWER TOWER, a working condition unit condenser water PUMP PUMP6 and a cooling TOWER circulating water PUMP PUMP 7;
the water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; a water inlet of a condenser water PUMP PUMP6 of the working condition unit is connected with a water outlet of an evaporator water TANK TANK 2; the water outlet of the working condition unit condenser WCCO is connected with the water inlet of the evaporator water TANK TANK 2;
the water outlet of the evaporator water TANK TANK2 is connected with the water inlet of a cooling tower circulating water PUMP PUMP 7; the water outlet of the cooling TOWER circulating water PUMP PUMP7 is connected with the water inlet of the cooling TOWER TOWER; the water outlet of the cooling TOWER TOWER is connected with the water inlet of an evaporator water TANK TANK 2;
by connecting the working condition unit condenser WCCO, the working condition unit condenser water PUMP PUMP6 and the evaporator water TANK TANK2, the condensation heat of the working condition unit condenser WCCO is used for heating the evaporator water TANK TANK2, so that the evaporation cold quantity brought to the evaporator water TANK TANK2 by the effluent water of the evaporator EV of the test prototype is balanced; the evaporator water TANK TANK2 is cooled through the connection among the evaporator water TANK TANK2, the cooling TOWER circulating water PUMP PUMP7 and the cooling TOWER TOWER.
6. The system for testing the inverse temperature working condition of the water-cooled chiller according to claim 2, wherein a working condition unit condenser WCCO is further arranged in the working condition unit; the test system further comprises: a cooling TOWER TOWER and a working condition unit condenser water PUMP PUMP 6;
the water inlet of the working condition unit condenser WCCO is connected with the water outlet of a working condition unit condenser water PUMP PUMP 6; a water inlet of a condenser water PUMP PUMP6 of the working condition unit is connected with a water outlet of an evaporator water TANK TANK 2; a water outlet of the condenser WCCO of the working condition unit is connected with a water inlet of the cooling TOWER TOWER; the water outlet of the cooling TOWER TOWER is connected with the water inlet of an evaporator water TANK TANK 2;
through the connection among the working condition unit condenser WCCO, the working condition unit condenser water PUMP PUMP6, the evaporator water TANK TANK2 and the cooling TOWER TOWER, the condensation heat of the working condition unit condenser WCCO is heated for the evaporator water TANK TANK2, so that the evaporation cold quantity brought to the evaporator water TANK TANK2 by the outlet water of the test prototype evaporator EV is balanced.
7. The system for testing the inverse temperature working condition of the water-cooled chiller according to claim 5 or 6, wherein the water inlet temperature of the evaporator water TANK TANK2 is controlled by adjusting the fan rotating speed of the cooling TOWER TOWER.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116754273A (en) * | 2023-08-11 | 2023-09-15 | 合肥通用机械研究院有限公司 | Cold water unit reverse temperature working condition testing system and working condition unit control strategy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288421A (en) * | 2011-05-03 | 2011-12-21 | 合肥通用机械研究院 | Variable-volume water chiller set test device |
| CN103617358A (en) * | 2013-11-29 | 2014-03-05 | 国核电力规划设计研究院 | Method for computing thermal performance of cooling tower under temperature inversion weather condition |
| CN203732295U (en) * | 2014-02-20 | 2014-07-23 | 南京师范大学 | Water-water type/water-glycol type water source heat pump set performance testing device |
-
2020
- 2020-03-12 CN CN202010169867.5A patent/CN111413117B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288421A (en) * | 2011-05-03 | 2011-12-21 | 合肥通用机械研究院 | Variable-volume water chiller set test device |
| CN103617358A (en) * | 2013-11-29 | 2014-03-05 | 国核电力规划设计研究院 | Method for computing thermal performance of cooling tower under temperature inversion weather condition |
| CN203732295U (en) * | 2014-02-20 | 2014-07-23 | 南京师范大学 | Water-water type/water-glycol type water source heat pump set performance testing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116754273A (en) * | 2023-08-11 | 2023-09-15 | 合肥通用机械研究院有限公司 | Cold water unit reverse temperature working condition testing system and working condition unit control strategy |
| CN116754273B (en) * | 2023-08-11 | 2023-11-14 | 合肥通用机械研究院有限公司 | Cold water unit reverse temperature working condition testing system and working condition unit control strategy |
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