Low energy passive temperature controlled remote inter-cabinet

Abstract

This invention discloses a low-energy passive temperature-controlled remote server rack room. The server rack room contains system cabinets, a temperature-controlled water tank, an internal heat exchanger, a circulating pump, temperature-controlled three-way valves, a main heat exchange circulation pipeline, and an internal heat exchange circulation pipeline. An external heat exchanger and an external heat exchange circulation pipeline are located outside the server rack room. The inlet and outlet of the temperature-controlled water tank are connected to channel a of two temperature-controlled three-way valves, and a circulating pump is installed on the main heat exchange circulation pipeline at the inlet. The inlet and outlet of the internal heat exchanger are connected to channel b of the two temperature-controlled three-way valves, and the inlet and outlet of the external heat exchanger are connected to channel c of the two temperature-controlled three-way valves. The two temperature-controlled three-way valves switch between channels a and b, and between channels a and c, based on the temperature difference between the inside and outside of the server rack room. This invention allows the temperature inside the server rack room to be maintained within the allowable operating temperature range for the electronic components inside the cabinets 24 hours a day, ensuring the economical and efficient operation of the entire server rack room.

Description

Technical Field

[0001] This invention relates to the field of remote rack room temperature control technology, specifically to a low-energy passive temperature control remote rack room. Background Technology

[0002] Wellheads, pipelines, and supply networks in the oil and gas industry are often located in or pass through remote areas, such as deserts. In these areas, it is also necessary to measure and monitor process parameters and equipment status. The monitoring systems used usually have low energy consumption requirements and can be powered by solar panels with backup batteries. It is not economical to set up a dedicated power supply network for small monitoring systems that are remotely distributed.

[0003] Because of its remote desert location, the area experiences long hours of sunshine and high levels of radiation during the day, resulting in high ambient temperatures—up to 58°C in shady areas—while nighttime temperatures drop significantly. Without any cooling system, the temperature inside the enclosed server racks can exceed 80°C during the day, rendering the electronic equipment within unreliable.

[0004] Existing active compressor air conditioning refrigeration cabinet rooms consume a lot of energy, require separate power supply cables, and cannot be powered by solar cells; therefore, there is a need for a low-energy temperature-controlled remote cabinet room that can maintain economical and efficient operation in the above environment. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a low-energy passive temperature-controlled remote server rack system. This system employs a passive cooling system consisting of a temperature-controlled water tank and internal and external heat exchangers to regulate the temperature within the rack system. Simultaneously, an active heat exchange circulation system is used via a circulating pump to reduce the diurnal temperature difference required for automatic convection heat exchange. Furthermore, a temperature-controlled three-way valve is used to switch between the internal and external circulation heat exchange pipelines, ensuring that the temperature within the rack system remains within the permissible operating temperature range for the electronic components 24 hours a day, thus guaranteeing the economical and efficient operation of the entire rack system.

[0006] This invention discloses a low-energy passive temperature-controlled remote cabinet room, comprising: a cabinet room;

[0007] The cabinet room is equipped with system cabinets, temperature-controlled water tanks, internal heat exchangers, circulating pumps, temperature-controlled three-way valves, main heat exchange circulation pipes, and internal heat exchange circulation pipes. The cabinet room is equipped with external heat exchangers and external heat exchange circulation pipes.

[0008] The inlet and outlet of the temperature-controlled water tank are connected to channel a of two temperature-controlled three-way valves via a heat exchange circulation main pipe, and a circulation pump is installed on the heat exchange circulation main pipe of the inlet. The inlet and outlet of the internal heat exchanger are connected to channel b of two temperature-controlled three-way valves via an internal heat exchange circulation pipe, and the inlet and outlet of the external heat exchanger are connected to channel c of two temperature-controlled three-way valves via an external heat exchange circulation pipe. The two temperature-controlled three-way valves switch between channel a and channel b, and between channel a and channel c, based on the internal and external temperature difference between the cabinet.

[0009] As a further improvement of the present invention, the temperature-controlled three-way valve is used to monitor the temperature of the medium in channel b and channel c; when the medium temperature in channel b is higher than the medium temperature in channel c, channel b is closed and channel a and channel c are connected; when the medium temperature in channel c is higher than the medium temperature in channel b, channel c is closed and channel a and channel b are connected.

[0010] As a further improvement to the present invention, the following is achieved based on the temperature-controlled three-way valve:

[0011] When the external temperature of the cabinet is higher than the internal temperature, the external heat exchange circulation pipe is closed and the internal heat exchange circulation pipe is opened, and the system cabinet is circulated and cooled based on the internal heat exchange circulation pipe.

[0012] When the internal temperature of the cabinet is higher than the external temperature, the internal heat exchange circulation pipe is closed and the external heat exchange circulation pipe is opened, and the system cabinet is cooled by circulating heat through the external heat exchange circulation pipe.

[0013] As a further improvement of the present invention, the rack room includes a rack room body, the outer surface of the rack room body is covered with a heat insulation layer, and a sunshade is installed on the top of the rack room body by a fixed bracket.

[0014] As a further improvement of the present invention, the heat insulation layer is composed of heat insulation material and a reflective heat insulation coating coated on the outer surface of the heat insulation material. The heat insulation material includes foam plastic, ultrafine glass wool, high silica cotton and vacuum heat insulation board. The reflective heat insulation coating is a reflective spinel dopant. The reflective spinel dopant includes ferric oxide, manganese dioxide, cobalt oxide and copper oxide.

[0015] As a further improvement of the present invention, the system cabinet is installed adjacent to or close to the temperature-controlled water tank, and the internal heat exchanger is installed inside the system cabinet or close to the system cabinet.

[0016] As a further improvement of the present invention, the medium circulating in the temperature-controlled water tank is a liquid medium with high specific heat capacity and low viscosity, including but not limited to water.

[0017] As a further improvement of the present invention, the circulating pump includes two circulating pumps connected in parallel, one for standby and one for use.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] The low-energy temperature-controlled remote cabinet room of this invention can not only meet the working environment requirements of electronic components in the cabinet, but also make efficient use of the day-night temperature difference in the cabinet room environment; it greatly reduces the energy consumption requirements of the remote cabinet room, improves the operational stability of the equipment inside the cabinet room, and reduces the engineering cost and maintenance cost of the cabinet room. It has great promotional value in the application of the oil and gas industry in environments with high day-night temperature differences. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the low-energy passive temperature-controlled remote cabinet room disclosed in this invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the structure of a three-way temperature control valve.

[0022] In the picture:

[0023] 1. Main cabinet; 2. System cabinet; 3. Temperature-controlled water tank; 4. Internal heat exchanger; 5. Circulation pump; 6. Temperature-controlled three-way valve; 7. Main heat exchange circulation pipeline; 8. Internal heat exchange circulation pipeline; 9. Sunshade; 10. External heat exchanger; 11. External heat exchange circulation pipeline; 12. Fixed bracket; 13. Channel a; 14. Channel b; 15. Channel c. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] The present invention will now be described in further detail with reference to the accompanying drawings:

[0026] like Figure 1 , 2 As shown, the present invention provides a low-energy passive temperature-controlled remote cabinet room, comprising: a cabinet room, a system cabinet 2, a temperature-controlled water tank 3, an internal heat exchanger 4, a circulating pump 5, a temperature-controlled three-way valve 6, a main heat exchange circulation pipe 7, an internal heat exchange circulation pipe 8, a sunshade 9, an external heat exchanger 10, an external heat exchange circulation pipe 11, and a fixed bracket 12; wherein,

[0027] The rack room of the present invention includes a rack room body 1, the outer surface of which is covered with a heat insulation layer to form a sunshade and heat insulation rack room. The heat insulation layer consists of heat insulation material and a reflective heat insulation coating applied to the outer surface of the heat insulation material. The heat insulation material includes foam plastic, ultrafine glass wool, high-silica cotton, and vacuum insulation board. The reflective heat insulation coating is a reflective spinel dopant, including ferric oxide, manganese dioxide, cobalt trioxide, and copper oxide. The heat insulation layer is used to reflect absorbed sunlight and heat into the air at a certain wavelength and reduce heat exchange with the external environment. The reflective heat insulation coating suppresses solar radiation heat, infrared radiation heat, and shields heat conduction, thereby reducing the impact of daytime solar radiation and ambient high-temperature heat conduction on the indoor temperature of the rack room. The sunshade 9 of the present invention is fixed to the top of the rack room body 1 by welding or bolting using a fixed bracket 12 in a common manner to prevent direct solar radiation heat conduction during sunlight.

[0028] This invention includes a system cabinet 2, a temperature-controlled water tank 3, an internal heat exchanger 4, a circulating pump 5, two temperature-controlled three-way valves 6, a main heat exchange circulation pipe 7, and an internal heat exchange circulation pipe 8, all arranged within a cabinet space. The installation positions of the system cabinet 2, temperature-controlled water tank 3, internal heat exchanger 4, circulating pump 5, temperature-controlled three-way valves 6, main heat exchange circulation pipe 7, and internal heat exchange circulation pipe 8 are rationally arranged according to design requirements. Preferably, the system cabinet 2 and the temperature-controlled water tank 3 are installed adjacent to or close to each other to improve heat exchange efficiency. The internal heat exchanger 4 is installed inside or close to the system cabinet 2 to achieve heat conduction and improve heat exchange efficiency.

[0029] The present invention provides an external heat exchanger 10 and an external heat exchange circulation pipe 11 arranged outside the cabinet. The external heat exchanger 10 is fixed to the top of the insulated cabinet and under the sunshade 9 using common installation methods such as welding and bolt connection. The external heat exchange circulation pipe 11 is reasonably arranged and fixed to the outside of the cabinet using common bracket installation methods.

[0030] The inlet and outlet of the temperature-controlled water tank 3 of this invention are connected to the channels a of two temperature-controlled three-way valves 6 via the heat exchange circulation main pipe 7. That is, the inlet of the temperature-controlled water tank 3 is connected to the channel a of one temperature-controlled three-way valve 6 via the heat exchange circulation main pipe 7, and a circulation pump 5 is installed on the heat exchange circulation main pipe 7. The outlet of the temperature-controlled water tank 3 is connected to the channel a of another temperature-controlled three-way valve 6 via the heat exchange circulation main pipe 7. The inlet and outlet of the internal heat exchanger 4 are connected to the channels b of two temperature-controlled three-way valves 6 via the internal heat exchange circulation pipe 8, and the inlet and outlet of the external heat exchanger 10 are connected to the channels c of two temperature-controlled three-way valves 6 via the external heat exchange circulation pipe 11.

[0031] Furthermore, the medium circulating inside the temperature-controlled water tank 3 is a liquid medium with high specific heat capacity and low viscosity, including but not limited to water.

[0032] Furthermore, the circulating pump 5 of this invention adopts a redundant configuration (one running and one standby) of a brushless reliable magnetic coupling electric pump, and is powered by a 24V DC power supply. In general, the average power consumption is only about 10 watts. The required energy can be provided by the power supply module of the internal system of the rack, which is consistent with the control system inside the rack. The power supply of the rack can be provided by the external power grid or by solar panels. It will not significantly increase the energy consumption of the entire rack, thus improving the stability and economy of the system.

[0033] Furthermore, the temperature-controlled water tank 3, the internal heat exchanger 4, and the external heat exchanger 10 of the present invention adopt commonly used liquid container types and heat exchanger types, and select corresponding size models according to the corresponding temperature requirements and the heat dissipation of the cabinet. All of these are existing technologies well known to those skilled in the art.

[0034] The two temperature-controlled three-way valves 6 of this invention switch between channels a and b, and between channels a and c, based on the temperature difference between the inside and outside of the cabinet. That is, when the external temperature of the cabinet is higher than the internal temperature, the external heat exchange circulation pipe 11 is closed and the internal heat exchange circulation pipe 8 is opened, and the system cabinet 2 is cooled by circulation based on the internal heat exchange circulation pipe 8; when the internal temperature of the cabinet is higher than the external temperature, the internal heat exchange circulation pipe 8 is closed and the external heat exchange circulation pipe 11 is opened, and the system cabinet 2 is cooled by circulation based on the external heat exchange circulation pipe 11. This forms an internal heat exchange circulation channel when the external ambient temperature is high during the day and an external heat exchange circulation channel when the external ambient temperature is low at night. At the same time, when the day-night temperature difference is insufficient to provide natural convection energy, the circulation pump is started to perform active circulation heat exchange to achieve the requirement of sufficient heat exchange.

[0035] Specifically:

[0036] The temperature-controlled three-way valve 6 of this invention is used to monitor the temperature of the medium in channels b and c. When the medium temperature in channel b is higher than that in channel c, it indicates that the internal temperature of the cabinet is higher than the external temperature. At this time, channel b is closed, and channels a and c are connected, i.e., the internal circulation channel is closed and the external circulation channel is opened. The medium in the temperature-controlled water tank and the inside of the cabinet are circulated and cooled by relying on the low external temperature environment through an external heat exchanger. When the medium temperature in channel c is higher than that in channel b, it indicates that the internal temperature of the cabinet is lower than the external temperature. Then, channel c is closed, and channels a and b are connected, i.e., the external circulation channel is closed and the internal circulation channel is opened. The cooling medium in the temperature-controlled water tank is used to cool the cabinet and the internal environment of the cabinet through an internal heat exchanger.

[0037] This invention provides a working principle for a low-energy passive temperature-controlled remote cabinet room:

[0038] The low-energy passive temperature-controlled remote cabinet has two operating modes: daytime and nighttime, depending on the external ambient temperature.

[0039] During the day, the external ambient temperature T2 is higher than the ambient temperature T1 inside the server rack. The two temperature-controlled three-way valves 6 inside the server rack detect the temperature difference between the two channels, close the external circulation channel, and open the internal circulation channel. Driven by the circulation pump 5, the cooling medium stored in the temperature-controlled water tank 3 exchanges heat with the air inside the server rack through the internal heat exchanger 4 to achieve the cooling effect, so that the temperature inside the server rack is lower than the maximum allowable operating temperature of the electronic components.

[0040] At night, the external ambient temperature T2 is lower than the internal ambient temperature T1 of the server rack. The two temperature-controlled three-way valves in the server rack detect the temperature difference between the two channels, close the internal circulation channel, and open the external circulation channel. Driven by the circulation pump 5, the high-temperature medium in the temperature-controlled water tank 3, which has undergone heat exchange throughout the day, is circulated to the external heat exchanger 10 for cooling and heat exchange, and finally reduced to the external ambient temperature.

[0041] The key parameters for designing and selecting the following components are as follows: 1. Server rack, 2. System rack, 3. Temperature-controlled water tank, 4. Internal heat exchanger, 5. Circulation pump, 6. Temperature-controlled three-way valve, 7. Main heat exchange circulation pipe, 8. Internal heat exchange circulation pipe, 9. Sunshade, 10. External heat exchanger, and 11. External heat exchange circulation pipe.

[0042] 1. Heat dissipation and heat dissipation Q (working / cooling time, heat dissipation) of equipment (mainly server racks) in the server room;

[0043] 2. The outdoor ambient temperature T the night before the hottest weather m (Used to determine heat exchange requirements under the most demanding conditions);

[0044] 3. The maximum permissible temperature T0 in the server rack room (mainly determined by the maximum operating temperature of the electronic components in the server rack room);

[0045] The equipment and cabinets within the server rack are the primary heat sources. Under enclosed conditions, this can cause the internal temperature of the cabinets to rise. If the temperature rises to a certain level, it will affect the operation of the electronic components within the server rack. The overall design requirements for the server rack must meet the following:

[0046] 1. On the hottest day in the environment, the temperature and quantity of the cooling medium stored in the temperature-controlled water tank can ensure that the temperature inside the cabinet room is kept below the maximum allowable temperature T0 through the internal heat exchanger 4;

[0047] Q×h=(T m -T0)×L×c

[0048] The required water tank volume L can be obtained from the above equations, where c is the specific heat capacity of the heat exchange medium.

[0049] 2. On the night before the hottest day in the environment, the cooling medium stored in the temperature-controlled water tank can reduce the temperature of all the cooling water in the tank to T through the external heat exchanger 10 between the server racks. m.

[0050] The selection of internal heat exchanger 4 and external heat exchanger 10 is calculated using heat exchanger heat exchange models familiar to those skilled in the art to obtain the required heat exchange area and heat exchange flow rate. The required pump head and circulation pipe size can be calculated using commonly used process simulation software.

[0051] By taking into account appropriate safety factors and margins in addition to the above calculations, the design and selection of the main equipment in the temperature-controlled remote cabinet room can be obtained, including the volume L of the temperature-controlled water tank, the heat exchange area of ​​the heat exchanger, the flow rate of the circulating pump, and the size of the circulating pipe.

[0052] The advantages of this invention are:

[0053] The low-energy temperature-controlled remote cabinet room of this invention can not only meet the working environment requirements of electronic components in the cabinet, but also make efficient use of the day-night temperature difference in the cabinet room environment; it greatly reduces the energy consumption requirements of the remote cabinet room, improves the operational stability of the equipment inside the cabinet room, and reduces the engineering cost and maintenance cost of the cabinet room. It has great promotional value in the application of the oil and gas industry in environments with high day-night temperature differences.

[0054] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A low-energy passive temperature-controlled remote cabinet room, characterized in that, include: Server rack room; The cabinet room is equipped with system cabinets, temperature-controlled water tanks, internal heat exchangers, circulating pumps, temperature-controlled three-way valves, main heat exchange circulation pipes, and internal heat exchange circulation pipes. The cabinet room is equipped with external heat exchangers and external heat exchange circulation pipes. The inlet and outlet of the temperature-controlled water tank are connected to channel a of two temperature-controlled three-way valves through a heat exchange circulation main pipe, and a circulation pump is installed on the heat exchange circulation main pipe of the inlet. The inlet and outlet of the internal heat exchanger are connected to channel b of two temperature-controlled three-way valves through an internal heat exchange circulation pipe, and the inlet and outlet of the external heat exchanger are connected to channel c of two temperature-controlled three-way valves through an external heat exchange circulation pipe. The two temperature-controlled three-way valves switch between channel a and channel b, and between channel a and channel c, based on the internal and external temperature difference between the cabinet. The temperature-controlled three-way valve is used to monitor the temperature of the medium in channel b and channel c; when the medium temperature in channel b is higher than the medium temperature in channel c, channel b is closed and channel a is connected to channel c; when the medium temperature in channel c is higher than the medium temperature in channel b, channel c is closed and channel a is connected to channel b. Based on the aforementioned temperature-controlled three-way valve: When the external temperature of the cabinet is higher than the internal temperature, the external heat exchange circulation pipe is closed and the internal heat exchange circulation pipe is opened, and the system cabinet is circulated and cooled based on the internal heat exchange circulation pipe. When the internal temperature of the cabinet is higher than the external temperature, the internal heat exchange circulation pipe is closed and the external heat exchange circulation pipe is opened, and the system cabinet is cooled by circulating heat through the external heat exchange circulation pipe.

2. The low-energy passive temperature-controlled remote cabinet room as described in claim 1, characterized in that, The server room includes a main body, the outer surface of which is covered with a heat insulation layer, and a sunshade is installed on the top of the main body via a fixed bracket.

3. The low-energy passive temperature-controlled remote cabinet room as described in claim 2, characterized in that, The heat insulation layer consists of heat insulation material and a reflective heat insulation coating applied to the outer surface of the heat insulation material. The heat insulation material includes foam plastic, ultrafine glass wool, high silica cotton and vacuum heat insulation board. The reflective heat insulation coating is a reflective spinel dopant, which includes ferric oxide, manganese dioxide, cobalt oxide and copper oxide.

4. The low-energy passive temperature-controlled remote cabinet room as described in claim 1, characterized in that, The system cabinet is installed adjacent to or close to the temperature-controlled water tank, and the internal heat exchanger is installed inside or close to the system cabinet.

5. The low-energy passive temperature-controlled remote cabinet room as described in claim 1, characterized in that, The medium circulating in the temperature-controlled water tank is a liquid medium with high specific heat capacity and low viscosity, including but not limited to water.

6. The low-energy passive temperature-controlled remote cabinet room as described in claim 1, characterized in that, The circulation pump includes two circulation pumps connected in parallel, one as a standby pump and the other as a backup pump.

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