CN108469198A - A kind of energy-saving enthalpy difference laboratory - Google Patents

Abstract

The invention relates to the technical field of enthalpy difference laboratories, and discloses an energy-saving enthalpy difference laboratory. An energy-saving enthalpy difference laboratory of the present invention includes an environmental chamber, a cooling tower, a condenser, and an energy recovery cycle system. The energy cycle recovery system includes a coil, a heat exchanger, a heat recovery pipeline, and a heat exchange pipeline. The coil is arranged in the environmental chamber, the coil forms a circulation loop through the heat recovery pipe and the heat exchanger, and the cooling tower and the condenser pass through the heat exchange pipe and the heat exchanger Constitute a circulation loop, the heat exchange pipeline is also provided with a first three-way valve, the input port of the first three-way valve, one of the output ports is set in series with the cooling tower, the first three-way valve The input port and the other output port are arranged in parallel with the cooling tower. The energy-saving enthalpy difference laboratory of the present invention is not affected by the external environment temperature, and has better energy-saving efficiency.

Description

An energy-saving enthalpy difference laboratory

technical field

The invention relates to the technical field of enthalpy difference laboratories, in particular to an energy-saving enthalpy difference laboratory.

Background technique

The existing enthalpy difference laboratory cools the water circulation system through the cooling tower. The water in the water circulation system is cooled by the cooling tower, and then sent to the condenser. The cold water absorbs the heat generated by the condenser and then flows to the plate heat exchanger. Heat exchange, so that the heat generated by the operation of the condenser is recovered to the environmental chamber.

This cooling structure is greatly affected by environmental factors. The ambient temperature is low in winter. After the cooling water flows through the cooling tower, it will evaporate and take away most of the heat, resulting in too low water temperature. After passing through the condenser to absorb heat, the temperature is not high. Finally, the experiment The heat exchanged by the heat exchanger in the chamber is low, resulting in insufficient heat in the laboratory, and an additional electric heating device is required, which increases the cost of the enthalpy difference laboratory.

Contents of the invention

In order to overcome the deficiencies of the prior art, the invention provides an energy-saving enthalpy difference laboratory which is not affected by ambient temperature.

The technical solution adopted by the present invention to solve the technical problem is to provide an energy-saving enthalpy difference laboratory, which includes an environmental chamber, a cooling tower, a condenser, and an energy recovery cycle system. The energy cycle recovery system includes a coil, a heat exchange device, heat recovery pipe, heat exchange pipe, the coil is set in the environmental chamber, the coil forms a circulation loop with the heat exchanger through the heat recovery pipe, the cooling tower and the condenser A circulation loop is formed by the heat exchange pipeline and the heat exchanger, and a first three-way valve is also arranged on the heat exchange pipeline, and an output port of the first three-way valve is located in the cooling tower connected in series. On the pipeline, the other output port of the first three-way valve is located on the pipeline parallel to the cooling tower.

As a further improvement of the above technical solution, the number of said condensers is at least two.

As a further improvement of the above technical solution, at least two of the condensers are arranged in parallel with each other.

As a further improvement of the above technical solution, each of the condensers is connected in series with a pressure head valve.

As a further improvement of the above technical solution, it also includes a second three-way valve, the second three-way valve is arranged between the condenser and the heat exchanger, the input port of the second three-way valve is connected to the The condenser is connected in series, one output port of the second three-way valve is connected in series with the heat exchanger, and the other output port of the second three-way valve is connected in parallel with the heat exchanger.

As a further improvement of the above technical solution, a variable frequency pump is also included, and the variable frequency pump is arranged between the first three-way valve and the condenser.

As a further improvement of the above technical solution, the environmental chamber includes a first environmental test room and a second environmental test room, and the coil includes a first coil installed in the first environmental test room, a first coil installed in the The second coil in the second environmental test room, the heat recovery pipeline includes a first heat recovery pipeline and a second heat recovery pipeline, and the first coil passes through the first heat recovery pipeline and the heat exchanger A circulation loop is formed, the second coil pipe forms a circulation loop with the heat exchanger through the second heat recovery pipeline, and the first heat recovery pipeline and the second heat recovery pipeline are arranged in parallel.

As a further improvement of the above technical solution, the first environmental test room and the second environmental test room are horizontally or vertically adjacent to each other.

As a further improvement of the above technical solution, the environmental chamber also includes a third environmental test room, the coil tube also includes a third coil tube arranged in the third environmental test room, and the heat recovery pipeline also includes a third environmental test room. Three heat recovery pipelines, the third coil tube forms a circulation loop with the heat exchanger through the third heat recovery pipeline, the third heat recovery pipeline and the first heat recovery pipeline and the second heat recovery pipeline Parallel setting.

As a further improvement of the above technical solution, the first environmental test room, the second environmental test room and the third environmental test room are adjacent to form an L-shaped structure.

The beneficial effects of the present invention are:

The energy-saving enthalpy difference laboratory of the present invention adds a first three-way valve. When the external environment temperature drops, the flow of circulating water flowing through the cooling tower is adjusted through the first three-way valve, and the cooling tower is disconnected, thereby ensuring the replacement Circulating water in the heat pipe fully exchanges heat with the condenser, which greatly improves the recovery and utilization of the heat generated by the condenser.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural schematic diagram of the energy-saving enthalpy difference laboratory of the present invention.

Detailed ways

The idea, specific structure and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

It should be noted that, unless otherwise specified, when a feature is called "fixed" or "connected" to another feature, it can be directly fixed and connected to another feature, or indirectly fixed and connected to another feature. on a feature. In addition, descriptions such as up, down, left, right, front, and back used in the present invention are only relative to the mutual positional relationship of the components of the present invention in the drawings.

Also, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terms used in the specification herein are for describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.

Referring to FIG. 1 , it shows a schematic structural diagram of an energy-saving enthalpy difference laboratory of the present invention.

The energy-saving enthalpy difference laboratory of the present invention includes an environmental chamber 1 , a coil pipe 2 , a heat recovery pipeline 3 , a heat exchanger 4 , a heat exchange pipeline 5 , a cooling tower 6 and a condenser 7 . The coil 2 is set in the environmental chamber 1, and the coil 1 forms a circulation loop with the heat exchanger 4 through the heat recovery pipe 3, so that the heat absorbed by the heat exchanger 4 is transferred to the environmental chamber 1 through the heat recovery pipe 3. In this implementation In the example, the heat absorbed by the heat exchanger 4 comes from the condenser 7, and the heat exchange pipe 5, the cooling tower 6, and the condenser 7 form a circulation loop through the heat exchange pipe 5, thereby absorbing the heat generated by the operation of the condenser 7.

The cooling tower 6 is connected in series with the condenser 7. When the enthalpy difference laboratory works for a long time or the external environment temperature is high, the temperature of the circulating water in the heat exchange pipe 5 is generally high, and it is necessary to pass the heat exchange through the cooling tower 6 first. The circulating water in the pipeline 5 is cooled, and the cooled circulating water flows into the condenser 7 to absorb the heat generated by the operation of the condenser 7. However, when the external environment temperature is low, especially in winter, the circulating water in the heat exchange pipeline 5 flows through When the cooling tower 6 loses too much heat, resulting in a large temperature drop, the heat exchange with the heat exchanger 4 is too small, and the overall energy utilization rate is too low.

For this reason, in this embodiment, the first three-way valve 80 is also arranged on the heat exchange pipeline 5, and the input port and one output port of the first three-way valve 80 are connected in series with the cooling tower 6, and the first three-way valve 80 The input port and the other output port are connected in parallel with the cooling tower 6, and the flow rate of the circulating water flowing into the cooling tower 6 in the heat exchange pipeline 5 can be adjusted through the first three-way valve 80, so that the recovered heat can be conveniently controlled, especially When the ambient temperature is low, the circulating water can be adjusted by the first three-way valve 80 so that the circulating water does not flow through the cooling tower 6, but directly flows into the condenser 7 through the first three-way valve 80 to absorb heat.

Preferably, the number of condensers 7 is at least two, and at least two condensers 7 are arranged in parallel.

Further, each condenser 7 is connected in series with a pressure head valve 70. When the corresponding condenser 7 of the pressure head valve 70 is not working, the pressure of the pressure head valve 70 is lower than the set value. At this time, the pressure head valve 70 is closed. circuit, to avoid circulating water from flowing through the circuit where the condenser 7 is located.

Preferably, the heat exchange pipeline 5 is also provided with a second three-way valve 81, the second three-way valve 81 is arranged between the heat exchanger 4 and the condenser 7, and the input port of the second three-way valve 81 is connected to the condenser 7 connected in series, one output port of the second three-way valve 81 is connected in series with the heat exchanger 4, and the other output port of the second three-way valve 81 is connected in parallel with the heat exchanger 4, so that the second three-way valve 81 can be connected to the The flow rate of the circulating water flowing into the heat exchanger 4 is regulated, so that the flow rate in the entire heat exchange pipeline 5 is more balanced and the operation is more stable.

Preferably, the heat exchange pipeline 5 is also provided with a frequency conversion pump 9, the frequency conversion pump 9 is arranged between the first three-way valve 80 and the condenser 7, and the circulating water flowing into the condenser 7 is further adjusted by adjusting the frequency of the frequency conversion pump 9 flow, and then regulate the heat absorbed by the circulating water in the entire heat exchange pipe 5.

In one embodiment of the present invention, the environmental chamber 1 includes a first environmental test room 10 and a second environmental test room 11, and correspondingly, the coil pipe 2 includes a first coil pipe 20 disposed in the first environmental test room 10 and The second coil 21 arranged in the second environmental test room 11, the heat recovery pipeline 3 includes a first heat recovery pipeline 30 and a second heat recovery pipeline 31, and the first coil 20 exchanges heat with the first heat recovery pipeline 30 The heat exchanger 4 forms a circulation loop, the second coil 21 forms a circulation loop with the heat exchanger 4 through the second heat recovery pipeline 31 , and the first heat recovery pipeline 30 and the second heat recovery pipeline 31 are arranged in parallel.

In this embodiment, the first environmental test room 10 and the second environmental test room 11 are horizontally or vertically adjacent to each other.

In another embodiment of the present invention, the environmental chamber 1 also includes a third environmental test room 12, correspondingly, the coil pipe 2 also includes a third coil pipe 22 arranged in the third environmental test room 12, and the heat recovery pipeline 3 Including the third heat recovery pipeline 32, the third coil 22 forms a circulation loop with the heat exchanger 4 through the third heat recovery pipeline 32, and the third heat recovery pipeline 32 is connected in parallel with the first heat recovery pipeline 30 and the second heat recovery pipeline 31 set up.

In this embodiment, the first environmental test room 10, the second environmental test room 11, and the third environmental test room 12 are connected to form an L-shaped structure.

The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the described embodiments, and those skilled in the art can also make various equivalent deformations or replacements without violating the spirit of the present invention. , these equivalent modifications or replacements are all within the scope defined by the claims of the present application.

Claims (10)

1. An energy-saving type enthalpy difference laboratory, comprising an environmental chamber, a cooling tower, a condensing machine and an energy recovery circulation system, is characterized in that the energy circulation recovery system comprises a coil, a heat exchanger, a heat recovery pipeline, a heat exchange pipeline, the coil is arranged in the environmental chamber, the coil forms a circulation loop with the heat exchanger through the heat recovery pipeline, and the cooling tower and the condenser communicate with the heat exchanger through the heat exchange pipeline The heat exchanger constitutes a circulation loop, the heat exchange pipeline is also provided with a first three-way valve, an output port of the first three-way valve is located on the pipeline connected in series with the cooling tower, and the first three-way valve The other output port of the through valve is located on the pipeline parallel to the cooling tower. 2. The energy-saving enthalpy difference laboratory according to claim 1, characterized in that the number of said condensers is at least two. 3. The energy-saving enthalpy difference laboratory according to claim 2, characterized in that at least two of the condensers are arranged in parallel with each other. 4. The energy-saving enthalpy difference laboratory according to claim 3, characterized in that, each of the condensers is connected in series with a pressure head valve. 5. The energy-saving enthalpy difference laboratory according to any one of claims 1-4, further comprising a second three-way valve, the second three-way valve being located between the condenser and the Between the heat exchangers, the input port of the second three-way valve is connected in series with the condenser, one output port of the second three-way valve is connected in series with the heat exchanger, and the output port of the second three-way valve Another outlet is connected in parallel with the heat exchanger. 6. The energy-saving enthalpy difference laboratory according to any one of claims 1-4, further comprising a frequency conversion pump, the frequency conversion pump being arranged between the first three-way valve and the condenser between. 7. The energy-saving enthalpy difference laboratory according to any one of claims 1-4, wherein the environmental chamber includes a first environmental test room and a second environmental test room, and the coil includes a The first coil in the first environmental test room and the second coil in the second environmental test room, the heat recovery pipeline includes a first heat recovery pipeline and a second heat recovery pipeline, the The first coil forms a circulation loop with the heat exchanger through the first heat recovery pipeline, the second coil forms a circulation loop with the heat exchanger through the second heat recovery pipeline, and the first coil forms a circulation loop with the heat exchanger through the second heat recovery pipeline. The heat recovery pipeline and the second heat recovery pipeline are arranged in parallel. 8. The energy-saving enthalpy difference laboratory according to claim 7, wherein the first environmental test room and the second environmental test room are horizontally or vertically adjacent to each other. 9. The energy-saving enthalpy difference laboratory according to claim 7, wherein the environmental chamber also includes a third environmental test room, and the coil also includes a first environmental test room arranged in the third environmental test room. Three coils, the heat recovery pipeline also includes a third heat recovery pipeline, the third coil forms a circulation loop with the heat exchanger through the third heat recovery pipeline, the third heat recovery pipeline and the The first heat recovery pipeline and the second heat recovery pipeline are arranged in parallel. 10. The energy-saving enthalpy difference laboratory according to claim 9, characterized in that, the first environmental test room, the second environmental test room, and the third environmental test room are adjacent to form an L-shaped structure.