An efficiency monitoring component and monitoring system for refrigeration equipment

Abstract

The present invention relates to the technical field of refrigeration equipment, and specifically to an efficiency monitoring component and a monitoring system for refrigeration equipment, comprising an outer frame of the component and internal support arms fixed inside the outer frame of the component, wherein at least two groups of the internal support arms are provided, and support rollers are rotatably provided on the internal support arms, and the outer sleeve of the support roller is provided with a rubber outer belt, and the inner surface of the rubber outer belt is provided with a ferromagnetic inner belt, and the outer surface of the rubber outer belt is fixedly provided with a mounting wing; the monitoring component of the present invention can automatically switch the position of a temperature sensor when measuring the air outlet temperature of the refrigeration equipment, and improve the accuracy of the air outlet temperature measurement by taking an average value of multiple sensors.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and in particular to an efficiency monitoring component and a monitoring system for refrigeration equipment. Background Art

[0002] Refrigeration equipment is a device that can generate cooling capacity using energy such as electricity, such as air conditioners, cold storage air coolers, etc. It uses a compressor to increase the pressure and temperature of the refrigerant, and after heat is dissipated by an external unit, it passes through an expansion valve to reduce the refrigerant pressure and temperature to generate cooling capacity. When estimating the efficiency of the refrigeration equipment, it is usually necessary to set temperature sensors at the air inlet and the cold air outlet of the indoor unit to detect the temperature difference. The most common method in the prior art is to place a temperature probe. When the temperature of the gas inlet and the cold air outlet is uneven, the monitoring error of a single fixed temperature probe is large. Summary of the invention

[0003] The object of the present invention is to provide an efficiency monitoring component and a monitoring system for refrigeration equipment to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a monitoring component, comprising an outer frame of the component and an internal support arm fixed inside the outer frame of the component, the number of the internal support arms being at least two groups, the internal support arms being rotatably provided with a support roller, the outer portion of the support roller being sleeved with a rubber outer belt, the inner surface of the rubber outer belt being attached with a ferromagnetic inner belt, the outer surface of the rubber outer belt being fixedly provided with a mounting wing, the number of the mounting wing being several groups, and being evenly distributed at intervals on the outer side of the rubber outer belt, the mounting wing being provided with a probe right-angle bracket, the probe right-angle bracket being fixedly provided with a temperature sensor, the outer side of the internal support arm being provided with a conversion drive mechanism, the conversion drive mechanism being capable of driving the support roller to rotate and causing the rubber outer belt to vibrate at the same time.

[0005] The conversion drive mechanism includes a roller worm gear, a control worm, a drive shaft and a track vertical shaft. The roller worm gear is transmission-connected to the supporting roller. A control worm is meshed on the outside of the roller worm gear. A drive shaft is coaxially fixed on one side of the control worm. A track vertical shaft is fixed on the inner surface of the component outer frame.

[0006] The track vertical shaft is provided with a vertical shaft groove, the length direction of which is parallel to the axis of the track vertical shaft, an oscillating sleeve is installed on the outer sleeve of the track vertical shaft, an inner wall edge is fixedly provided on the inner wall surface of the oscillating sleeve, and the inner wall edge is limitedly clamped in the vertical shaft groove.

[0007] The outer sleeve of the track vertical shaft is provided with a connecting spring, the upper end of the connecting spring is connected and fixed to the bottom of the oscillation sleeve, the lower end of the connecting spring is connected and fixed to the inner wall surface of the component outer frame, the outside of the oscillation sleeve is fixedly provided with a side wing support arm, the side wing support arm is fixedly provided with a magnetic block support plate, the magnetic block support plate is installed with a permanent magnet, and the permanent magnet is magnetically matched with the ferromagnetic inner belt.

[0008] The oscillating sleeve is provided with a dynamic slot, in which a dynamic rack is inserted. The dynamic rack contacts the teeth of the roller worm gear. When the roller worm gear rotates, the dynamic rack can be moved to make the oscillating sleeve move along the axis of the track vertical shaft.

[0009] A limited rectangular frame is fixedly provided at the end of the dynamic rack, a fixed dial shaft is inserted in the limited rectangular frame, and a dial shaft turntable is fixedly provided at the lower part of the fixed dial shaft. When the dial shaft turntable rotates, the dynamic rack can be driven to reciprocate linearly through the cooperation of the fixed dial shaft and the limited rectangular frame.

[0010] A rotating round shaft rod is coaxially fixedly provided at the lower part of the shaft dial, a shaft rod positioning sleeve is fixedly provided on the oscillating sleeve, the rotating round shaft rod is rotatably provided in the shaft rod positioning sleeve, a connecting square shaft is fixedly provided at the lower end of the rotating round shaft rod, a connecting sleeve is provided at the lower end of the connecting square shaft, the connecting sleeve and the connecting square shaft can move axially relative to each other, and when the connecting sleeve rotates, the connecting square shaft can be driven to rotate by limiting the position, and a supporting platform plate is fixedly provided on the outer surface of the internal support arm, and the supporting platform plate provides limiting support for the connecting sleeve.

[0011] A receiving shaft is rotatably inserted in the supporting platform plate, a driven worm gear is fixedly provided on the upper end of the receiving shaft, a driving worm is meshed with the outside of the driven worm gear, the driving worm is coaxially fixed with the roller worm gear, a transmission pulley is fixedly provided on the lower ends of the receiving shaft and the connecting sleeve respectively, a transmission belt is sleeved on the outside of the transmission pulley, which can drive the connecting sleeve to rotate when the receiving shaft rotates.

[0012] A mounting foot plate is fixedly arranged on the outer frame of the component, a roller main shaft is coaxially fixedly arranged on the supporting roller, and the roller main shaft is rotatably inserted in the internal support arm.

[0013] An efficiency monitoring system for a refrigeration device, comprising a monitoring component and an electric energy meter for measuring the electric energy consumption of the refrigeration device, wherein the monitoring components are provided in two groups, which are respectively provided at the air inlet and the cold air outlet of the refrigeration device, and the average temperatures of the air inlet and the cold air outlet are respectively measured by the monitoring components, thereby obtaining a temperature difference ΔT;

[0014] The cooling capacity is calculated according to the formula Q=c*ρ*V*ΔT, where Q is the cooling capacity, c is the specific heat capacity of air, ρ is the air density, and V is the air volume; the efficiency of the refrigeration equipment is obtained by the ratio of the cooling capacity Q to the power consumption of the refrigeration equipment.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The monitoring component of the present invention, through the coordination of structures such as the rubber outer belt, the supporting roller and the temperature sensor, can automatically switch the position of the temperature sensor when measuring the air outlet temperature of the refrigeration equipment, and by taking the average value of multiple sensors, the accuracy of the air outlet temperature measurement is improved, and the measurement error caused by uneven temperature distribution at the air inlet or the cold air outlet is reduced.

[0017] Through the conversion drive mechanism, the rotation of the supporting roller can be converted into vibration force, and the rubber outer belt and the temperature sensor can be driven to vibrate, so that the temperature sensor can automatically shake off dust, realize automatic cleaning, and reduce the influence of dust accumulation on temperature measurement; and the dynamic rack, the dial shaft turntable and the connecting sleeve and other structures provided in the conversion drive mechanism cooperate, so that the dynamic rack can move linearly and slowly when cooperating with the roller worm gear, so as to avoid the same part of the dynamic rack continuously contacting and rubbing with the teeth of the roller worm, and the temperature rising too quickly causing aggravated wear; the dynamic rack moves back and forth slowly, so that the contact and friction parts have sufficient heat dissipation time, and at the same time make the wear distribution more uniform, which greatly extends the life of the dynamic rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 for Figure 1 A magnified schematic diagram of area A in the middle.

[0020] Figure 3 for Figure 2 Enlarged schematic diagram of area B in the middle.

[0021] Figure 4 It is a schematic diagram of the overall structure of the present invention from another angle.

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of area C in the middle.

[0023] Figure 6 It is the front view of the overall structure of the present invention.

[0024] Figure 7 for Figure 6 Enlarged schematic diagram of area D in the middle.

[0025] Figure 8 This is a structural diagram of the oscillating sleeve component of the present invention.

[0026] Fig. 9 It is a structural diagram of the dial shaft turntable component of the present invention.

[0027] In the figure: 1, component frame; 2, internal support arm; 3, support roller; 4, rubber outer belt; 5, ferromagnetic inner belt; 6, mounting wing; 7, probe right angle bracket; 8, temperature sensor; 201, roller worm gear; 202, control worm; 203, drive shaft; 204, track vertical shaft; 205, vertical shaft vertical groove; 206, oscillation sleeve; 207, inner wall edge; 208, connecting spring; 209, side wing support arm; 210, magnetic block support plate; 211, permanent magnet ; 212, dynamic slot; 213, dynamic rack; 214, limiting rectangular frame; 215, fixed dial shaft; 216, dial shaft turntable; 217, rotating round shaft rod; 218, shaft rod positioning sleeve; 219, connecting square shaft; 220, connecting sleeve; 221, supporting platform plate; 222, receiving shaft; 223, driven worm gear; 224, driving worm; 225, transmission pulley; 226, transmission belt; 101, mounting foot plate; 301, roller spindle. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] The present invention provides a technical solution: a monitoring component, such as Figure 1 As shown in, it includes an assembly outer frame 1 and an internal support arm 2 fixed inside the assembly outer frame 1, the number of internal support arms 2 is at least two groups, a support roller 3 is rotatably arranged on the internal support arm 2, a rubber outer belt 4 is sleeved on the outside of the support roller 3, a ferromagnetic inner belt 5 is attached to the inner surface of the rubber outer belt 4, the ferromagnetic inner belt 5 can be composed of a metal woven mesh, the metal is iron, which can be attracted by magnetic force, the ferromagnetic inner belt 5 can also be arranged in an array of iron bars parallel to the axial direction of the support roller 3, a mounting wing 6 is fixedly arranged on the outer surface of the rubber outer belt 4, the number of mounting wing 6 is several groups, and they are evenly distributed on the outer side of the rubber outer belt 4, a probe right-angle bracket 7 is installed on the mounting wing 6, a temperature sensor 8 is fixedly installed on the probe right-angle bracket 7, and a conversion drive mechanism is arranged on the outside of the internal support arm 2, the conversion drive mechanism can drive the support roller 3 to rotate and make the rubber outer belt 4 vibrate at the same time.

[0030] like Figure 3As shown in the figure, the conversion drive mechanism includes a roller worm gear 201, a control worm 202, a drive shaft 203 and a track vertical shaft 204. The roller worm gear 201 is connected to the supporting roller 3 in transmission. The control worm 202 is meshed on the outside of the roller worm gear 201. The drive shaft 203 is coaxially fixed on one side of the control worm 202. The track vertical shaft 204 is fixed on the inner surface of the component outer frame 1. A motor is arranged at the end of the drive shaft 203, and the drive shaft 203 is driven by the motor. The motor is a servo motor that can achieve accurate control of the number of turns.

[0031] A vertical shaft slot 205 is provided on the track vertical shaft 204, and the length direction of the vertical shaft slot 205 is parallel to the axis of the track vertical shaft 204. An oscillating sleeve 206 is sleeved on the outside of the track vertical shaft 204, and an inner wall clip 207 is fixedly provided on the inner wall surface of the oscillating sleeve 206, and the inner wall clip 207 is limitedly provided in the vertical shaft slot 205. A connecting spring 208 is sleeved on the outside of the track vertical shaft 204, and the upper end of the connecting spring 208 is connected and fixed to the bottom of the oscillating sleeve 206, and the lower end of the connecting spring 208 is connected and fixed to the inner wall surface of the component outer frame 1. A side wing support arm 209 is fixedly provided on the outside of the oscillating sleeve 206, and a magnetic block support plate 210 is fixedly provided on the side wing support arm 209, and a permanent magnet 211 is installed on the magnetic block support plate 210, and the permanent magnet 211 is magnetically matched with the ferromagnetic inner belt 5.

[0032] The oscillating sleeve 206 is provided with a dynamic slot 212, in which a dynamic rack 213 is inserted. The dynamic rack 213 contacts the teeth of the roller worm gear 201. When the roller worm gear 201 rotates, the dynamic rack 213 can be moved to make the oscillating sleeve 206 move along the axis of the track vertical shaft 204. A limited position rectangular frame 214 is fixedly provided at the end of the dynamic rack 213, in which a fixed dial shaft 215 is inserted, and a dial shaft rotating disk 216 is fixedly provided at the lower part of the fixed dial shaft 215. When the dial shaft rotating disk 216 rotates, the fixed dial shaft 215 cooperates with the limited position rectangular frame 214 to drive the dynamic rack 213 to reciprocate linearly.

[0033] A rotating circular shaft rod 217 is coaxially fixedly provided at the lower part of the shaft dial 216, and a shaft rod positioning sleeve 218 is fixedly provided on the oscillating sleeve 206. The rotating circular shaft rod 217 is rotatably set in the shaft rod positioning sleeve 218. A connecting square shaft 219 is fixedly provided at the lower end of the rotating circular shaft rod 217, and a connecting sleeve 220 is sleeved at the lower end of the connecting square shaft 219. The connecting sleeve 220 and the connecting square shaft 219 can move axially relative to each other. When the connecting sleeve 220 rotates, the connecting square shaft 219 can be driven to rotate by limiting. A supporting platform plate 221 is fixedly provided on the outer surface of the internal support arm 2, and the supporting platform plate 221 provides limiting support for the connecting sleeve 220.

[0034] A receiving shaft 222 is rotatably inserted in the supporting platform plate 221, a driven worm gear 223 is fixedly provided on the upper end of the receiving shaft 222, a driving worm 224 is meshed with the outside of the driven worm gear 223, the driving worm 224 is coaxially fixed with the roller worm gear 201, a transmission pulley 225 is fixedly provided on the lower ends of the receiving shaft 222 and the connecting sleeve 220, a transmission belt 226 is sleeved on the outside of the transmission pulley 225, and when the receiving shaft 222 rotates, it can drive the connecting sleeve 220 to rotate.

[0035] A mounting foot plate 101 is fixedly provided on the component outer frame 1 , and a roller main shaft 301 is coaxially fixedly provided on the supporting roller 3 , and the roller main shaft 301 is rotatably inserted in the internal support arm 2 .

[0036] An efficiency monitoring system for a refrigeration device includes a monitoring component and an electric energy meter for measuring the electric energy consumption of the refrigeration device. There are two sets of monitoring components, which are respectively arranged at the air inlet and the cold air outlet of the refrigeration device. The average temperatures of the air inlet and the cold air outlet are measured by the monitoring components, thereby obtaining a temperature difference ΔT.

[0037] The cooling capacity is calculated according to the formula Q=c*ρ*V*ΔT, where Q is the cooling capacity, c is the specific heat of air, ρ is the air density, and V is the air volume. The efficiency of the refrigeration equipment is obtained by the ratio of the cooling capacity Q to the power consumption of the refrigeration equipment. The specific heat of air, air density, and air volume are all known quantities, and the air volume V is the driving flow of the gas by the fan inside the refrigeration equipment, which is the factory setting value of the fan inside the refrigeration equipment.

[0038] The monitoring components of the present invention require at least two groups when in use, and are respectively installed at the air inlet and cold air outlet of the refrigeration equipment through the installation foot plate 101. The air flow temperature is detected by the temperature sensor 8. The temperature sensor 8 has multiple groups, and the average value is taken when obtaining data.

[0039] like Figure 2 and Figure 3 As shown in the figure, the driving shaft 203 is driven to rotate by the motor. When the driving shaft 203 rotates, the worm 202 is controlled to rotate, thereby driving the roller worm gear 201 and the supporting roller 3 to rotate, so that the rubber outer belt 4 rotates; by controlling the number of rotations of the driving shaft 203, the rubber outer belt 4 makes a half-circle reciprocating rotation to avoid kinking of the connecting line of the temperature sensor 8. The above-mentioned half-circle reciprocating rotation means that the point movement distance of the rubber outer belt 4 each time it rotates is only half of its circumference, and it reciprocates slowly.

[0040] The position of the temperature sensor 8 is switched by rotation, and the average value is taken to improve the accuracy of the air outlet temperature measurement and reduce the measurement error caused by the uneven temperature distribution at the air inlet or the cold air outlet.

[0041] like Figure 3 As shown in , during the rotation of the roller worm gear 201, the roller worm gear 201 cooperates with the dynamic rack 213 to move the oscillating sleeve 206 along the axial direction of the track vertical shaft 204, and due to the connection of the connecting spring 208, it can provide elastic tension or thrust to the oscillating sleeve 206, and cooperate with the teeth of the roller worm gear 201 to make the oscillating sleeve 206 vibrate along the axial direction of the track vertical shaft 204. When the oscillating sleeve 206 vibrates, it will drive the side wing support arm 209, the magnetic block support plate 210 and the permanent magnet 211 to vibrate; as shown in Figure 2 As shown in , the permanent magnet 211 is divided into two parts, upper and lower, corresponding to the two layers of rubber outer belt 4 respectively. When the permanent magnet 211 at the upper position moves upward, it will squeeze and push the rubber outer belt 4. When the permanent magnet 211 moves downward, it will pull the rubber outer belt 4 through magnetic attraction, so that the rubber outer belt 4 follows the vibration. When the rubber outer belt 4 vibrates, the temperature sensor 8 is driven to vibrate. Due to the fast air flow rate, dust in the air is easy to accumulate. The active vibration of the temperature sensor 8 realizes a certain degree of automatic cleaning.

[0042] like Figure 3 As shown in the figure, during the rotation of the roller worm gear 201, the driving worm 224 is also driven to rotate, and the driving worm 224 drives the driven worm gear 223 to rotate, so that the receiving shaft 222 further slows down and rotates, and the connecting sleeve 220 rotates at a low speed through the transmission of the transmission pulley 225 and the transmission belt 226; since the internal cross-section of the connecting sleeve 220 is square, it is limited by the connecting square shaft 219, and can drive the connecting square shaft 219 to rotate. At the same time, when the connecting square shaft 219 moves up and down following the oscillation sleeve 206, it does not affect the transmission between the two.

[0043] When the connecting square shaft 219 rotates, the axle turntable 216 rotates synchronously. The axle turntable 216 cooperates with the limiting rectangular frame 214 through the fixed axle 215 to drive the dynamic rack 213 to move back and forth in a straight line direction, so that the contact and friction parts between the dynamic rack 213 and the teeth of the roller worm gear 201 have sufficient heat dissipation time, and at the same time make the wear distribution more uniform.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A monitoring component, comprising a component outer frame (1) and internal support arms (2) fixed inside the component outer frame (1), wherein the number of the internal support arms (2) is at least two groups, and characterized in that: The inner support arm (2) is provided with a support roller (3) for rotation, the outer surface of the support roller (3) is provided with a rubber outer belt (4), the inner surface of the rubber outer belt (4) is provided with a ferromagnetic inner belt (5), the outer surface of the rubber outer belt (4) is provided with a mounting wing (6) fixedly arranged, the number of the mounting wing (6) is a total of a plurality of groups, and the mounting wing (6) is evenly distributed at intervals on the outer side of the rubber outer belt (4), the mounting wing (6) is provided with a probe right angle bracket (7), the probe right angle bracket (7) is fixedly provided with a temperature sensor (8), and the outer side of the inner support arm (2) is provided with a conversion drive mechanism, the conversion drive mechanism can drive the support roller (3) to rotate and make the rubber outer belt (4) vibrate at the same time; The conversion drive mechanism comprises a roller worm gear (201), a control worm (202), a drive shaft (203) and a track vertical shaft (204); the roller worm gear (201) is in driving connection with the supporting roller (3); the control worm (202) is meshedly arranged on the outside of the roller worm gear (201); the drive shaft (203) is coaxially fixedly arranged on one side of the control worm (202); the track vertical shaft (203) is fixedly arranged on the inner surface of the component outer frame (1); 4); a vertical shaft groove (205) is provided on the track vertical shaft (204); the length direction of the vertical shaft groove (205) is parallel to the axis of the track vertical shaft (204); an oscillating sleeve (206) is sleeved on the outside of the track vertical shaft (204); an inner wall edge (207) is fixedly provided on the inner wall surface of the oscillating sleeve (206); the inner wall edge (207) is limitedly clamped in the vertical shaft groove (205); the outer surface of the track vertical shaft (204) is provided with an oscillating sleeve (206); The sleeve is provided with a connecting spring (208), the upper end of the connecting spring (208) is connected and fixed to the bottom of the oscillating sleeve (206), the lower end of the connecting spring (208) is connected and fixed to the inner wall surface of the component outer frame (1), the outer part of the oscillating sleeve (206) is fixedly provided with a side wing support arm (209), the side wing support arm (209) is fixedly provided with a magnetic block support plate (210), and the magnetic block support plate (210) is installed with a permanent magnet (211), and the The permanent magnet (211) is magnetically matched with the ferromagnetic inner belt (5); a dynamic slot (212) is provided on the oscillating sleeve (206); a dynamic rack (213) is inserted into the dynamic slot (212); the dynamic rack (213) and the teeth of the roller worm gear (201) are in contact with each other; when the roller worm gear (201) rotates, the dynamic rack (213) can be moved to allow the oscillating sleeve (206) to move along the axial direction of the track vertical shaft (204).

2. The monitoring assembly according to claim 1, characterized in that: A limited rectangular frame (214) is fixedly provided at the end of the dynamic rack (213), a fixed shifting shaft (215) is inserted into the limited rectangular frame (214), and a shifting shaft rotating disk (216) is fixedly provided at the lower part of the fixed shifting shaft (215); when the shifting shaft rotating disk (216) rotates, the fixed shifting shaft (215) and the limited rectangular frame (214) cooperate to drive the dynamic rack (213) to reciprocate linearly.

3. The monitoring assembly according to claim 2, characterized in that: A rotating round shaft rod (217) is coaxially fixedly arranged at the lower part of the shaft dial (216); a shaft rod positioning sleeve (218) is fixedly arranged on the oscillating sleeve (206); the rotating round shaft rod (217) is rotatably arranged in the shaft rod positioning sleeve (218); a connecting square shaft (219) is fixedly arranged at the lower end of the rotating round shaft rod (217); a connecting sleeve (220) is sleeved at the lower end of the connecting square shaft (219); the connecting sleeve (220) and the connecting square shaft (219) are relatively axially movable; when the connecting sleeve (220) rotates, the connecting square shaft (219) can be driven to rotate by limiting; a supporting platform plate (221) is fixedly arranged on the outer surface of the internal support arm (2); the supporting platform plate (221) performs limiting support on the connecting sleeve (220).

4. The monitoring assembly according to claim 3, characterized in that: A receiving shaft (222) is rotatably inserted in the support platform plate (221); a driven worm gear (223) is fixedly provided on the upper end of the receiving shaft (222); a driving worm (224) is meshedly provided on the outside of the driven worm gear (223); the driving worm (224) is coaxially fixed with the roller worm gear (201); transmission pulleys (225) are fixedly provided on the lower ends of the receiving shaft (222) and the connecting sleeve (220); a transmission belt (226) is sleeved on the outside of the transmission pulley (225); and when the receiving shaft (222) rotates, the connecting sleeve (220) can be driven to rotate.

5. The monitoring assembly according to claim 1, characterized in that: A mounting foot plate (101) is fixedly provided on the component outer frame (1), a roller main shaft (301) is coaxially fixedly provided on the supporting roller (3), and the roller main shaft (301) is rotatably inserted in the internal support arm (2).

6. An efficiency monitoring system for refrigeration equipment, characterized in that: The monitoring component comprises the monitoring component according to any one of claims 1 to 5 and an electric energy meter for measuring the electric energy consumption of the refrigeration equipment, wherein the monitoring components are provided in two groups, which are respectively provided at the air inlet and the cold air outlet of the refrigeration equipment, and the average temperature of the air inlet and the cold air outlet is measured by the monitoring components, thereby obtaining the temperature difference ΔT; The cooling capacity is calculated according to the formula Q=c*ρ*V*ΔT, where Q is the cooling capacity, c is the specific heat capacity of air, ρ is the air density, and V is the air volume; the efficiency of the refrigeration equipment is obtained by the ratio of the cooling capacity Q to the power consumption of the refrigeration equipment.

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