scispace - formally typeset
Search or ask a question

How to make hot temperature to cold temperature of a room? 


Best insight from top research papers

To transition from hot to cold temperatures in a room, various methods can be employed based on different technologies. One approach involves utilizing a room temperature raising apparatus that includes a heating unit to convert cold air into hot air, which then flows upward due to convection and is discharged through an air outlet via a forced convection unit . Another method involves a magnetic refrigerator device based on adiabatic magnetic refrigeration, where cyclic magnetization and demagnetization of a magnetic material generate a temperature difference between hot and cold regions, achieving efficient cooling . Additionally, a room temperature bonding apparatus can be used to bring substrates into contact at room temperature, imposing a load on them to facilitate bonding processes effectively . These technologies offer diverse ways to manage temperature transitions within a room.

Answers from top 5 papers

More filters
Papers (5)Insight
Not addressed in the paper.
Not addressed in the paper.
By utilizing adiabatic magnetic refrigeration with permanent magnets, a temperature difference can be achieved. The process involves cyclic magnetization and demagnetization of a magnetic material, such as gadolinium, at room temperature.
Patent
Shimizu Masashi, Fukushiro Takeshi 
06 Jun 1987
4 Citations
Integrate a heater with an evaporator in a low temperature room, using hot gas from a freezing cycle to efficiently transition from hot to cold temperatures in the room.
Not addressed in the paper.

Related Questions

What is the ideal temperature for indoor settings?5 answersThe ideal temperature for indoor settings varies depending on the specific environment and purpose. Research suggests that for a conference hall, maintaining a temperature between 18 to 26 °C with a supply air temperature of 15 °C and air velocity of 1 m/s can provide a comfortable thermal environment. In office buildings, optimal performance is achieved at temperatures between 22.6 to 26.0 °C, with relative humidity between 50% to 68%. For residential buildings, it is recommended to keep temperatures above 18°C at all times, especially for vulnerable populations like the elderly or those with disabilities. Understanding the temperature's impact on chemical reactions, equilibria, and indoor contaminant levels is crucial for designing spaces that ensure both comfort and health.
What is the ideal temperature range for humans in a room for optimal comfort?5 answersThe ideal temperature range for optimal human comfort in a room varies based on activities and structural positions. Research suggests that for relaxed sitting activities, a temperature of around 22°C with a relative humidity of 59.6% is recommended. In contrast, for more active tasks like seated typing in offices, a slightly lower temperature of 21°C with a relative humidity of 59.3% is considered ideal for productivity. Additionally, controlling air movement through a system of fans can enhance thermal comfort, with experiments showing improved satisfaction levels at temperatures ranging from 26°C to 29°C. Radiant cooling systems, particularly effective during nighttime and early morning hours, can provide comfort while saving energy, with optimal comfort ranges between 25°C to 30°C depending on air velocity.
How Industrial Cold Rooms work?4 answersIndustrial Cold Rooms operate by utilizing various components and processes to maintain specific temperature conditions for storage purposes. These rooms are designed with considerations like construction materials, dimensions, and thermal loads to ensure efficient cooling. The systems typically consist of cold-air-drying machines, air blowers, and air-drying frames to facilitate continuous operation and prevent cross-contamination. Refrigeration chambers are manufactured to cater to diverse needs in industrial, medical, and domestic sectors, optimizing air conditioning systems to achieve desired temperatures for product preservation. Cooling systems employ compressors, condensers, heat exchangers, expansion valves, and evaporators to circulate refrigerants at varying temperatures and pressures, ensuring minimal heat discharge and efficient cooling processes. Cold channels in network machine rooms are designed with inner and outer frameworks, side baffle plates, and turnover plates to enhance refrigeration efficiency without impacting consumers.
How cold room works?4 answersA cold room operates by utilizing various mechanisms to maintain low temperatures for storage purposes. Different inventions provide insights into the functionality of cold rooms. For instance, a cold room simulator assesses thermal loads, cooling cycles, compressor work, and energy consumption. Another invention introduces a cold-resistant ice room that forms ice blocks using molds, creating cavities for ice chippings, and preserving cold through vacuum heat preservation. Additionally, a variable-size cold storage adjusts room size and blower load based on stored goods, enhancing energy efficiency. Furthermore, a tobacco leaf sampling device automates sampling above a mesh belt in a cooling area, ensuring efficient and accurate sampling. Lastly, an evaporative cooling system reduces indoor temperatures by circulating water through a heat storage structure, achieving effective cooling in summer.
How does cold plate work ?4 answersA cold plate operates by transferring heat away from electronic components using liquid coolant circulation. The cold plate typically consists of a thermally conductive body with internal fluid channels for coolant flow, an inlet for coolant entry, and an outlet for coolant exit. Some cold plates incorporate microchannels and planar channels within the plate structure to enhance heat dissipation. Additionally, certain designs feature a porous thermal conductive structure that connects fluid channels and aids in efficient heat transfer. The coolant, often a liquid, absorbs heat from the electronic device, flows through the cold plate's channels, and dissipates the heat as it exits the system, effectively cooling the electronic components.
What is cold acclimation in bacteria?5 answersCold acclimation in bacteria refers to the physiological response triggered by a rapid decrease in temperature, allowing them to survive in unfavorable conditions. This process involves various adaptive changes, including alterations in membrane composition, translation and transcription machineries, and overall repression of translation. Bacteria adapt to low temperatures by increasing membrane fluidity, decreasing activation energy for enzyme activity, producing cold shock proteins, inducing cold-inducible genes, inhibiting cold denaturation of proteins, and enhancing the efficiency of transcription and translation. The cold shock response leads to a growth block and the induction of specific proteins that help cells adjust their metabolism to the new conditions. The adaptation process in mesophilic bacteria like Escherichia coli takes approximately 4 hours. Understanding the molecular mechanisms of cold adaptation in bacteria, including the functions of RNA-interacting proteins and RNases, is still an ongoing area of research.

See what other people are reading

Can electric panel heaters be used in conjunction with other heating systems for optimal home comfort?
5 answers
Electric panel heaters can indeed be used in conjunction with other heating systems to achieve optimal home comfort. Research indicates that electric panel heaters, particularly those utilizing thin metallic coatings made of nickel-chromium alloy, can provide high area heating capacities and heating rates, outperforming many ceramic heating elements. Additionally, studies highlight the importance of heat distribution in achieving energy-efficient thermal comfort, with floor heating systems being identified as the most suitable option due to factors like uniform heat distribution and thermal comfort index. By combining electric panel heaters with other systems like floor heating, it is possible to enhance overall comfort while ensuring efficient energy consumption and effective heat distribution throughout the home.
How does genetic algorithm optimize micro heat sinks?
10 answers
Genetic Algorithm (GA) optimizes micro heat sinks by employing a multi-step process that iteratively improves the design parameters to enhance performance metrics such as thermal resistance, pumping power, and operational time. Initially, GA defines a population of potential solutions based on the design variables, such as geometric configurations, material properties, and flow conditions. Each solution within the population is evaluated using objective functions that measure performance aspects like thermal resistance, pumping power, and entropy generation rate. The optimization process involves the selection of the best-performing solutions to form a new generation, applying crossover and mutation operations to introduce variability and explore the design space. This evolutionary process is guided by the principles of survival of the fittest, ensuring that over successive generations, the population evolves towards optimal solutions. The use of Pareto optimality in multi-objective optimization helps in identifying solutions that offer the best trade-off between conflicting objectives, such as minimizing thermal resistance while also minimizing pumping power. GA's effectiveness in optimizing micro heat sinks is further enhanced by integrating it with other computational methods. For instance, coupling GA with finite volume-based CFD solvers or surrogate models allows for accurate evaluation of the thermal and fluid dynamics performance of each design iteration. Additionally, GA has been successfully applied to optimize the geometric parameters of microchannel heat sinks filled with porous media, demonstrating significant reductions in thermal resistance. Moreover, GA has been utilized in specialized applications, such as optimizing the configuration of phase-change material-based heat sinks for extended operational times, and in the design of heat sinks with complex features like porous layers and deflectors to minimize hot-spot temperatures under mass constraints. This optimization technique has also been adapted to solve inverse radiation heat transfer problems, showcasing its versatility. In summary, GA optimizes micro heat sinks by iteratively refining design parameters to meet performance objectives, leveraging computational models for accurate evaluations, and employing multi-objective optimization to balance conflicting goals.
What are the key components of the HVAC process flow in an economizer system?
5 answers
The key components of the HVAC process flow in an economizer system include various elements such as air intakes, controllers, sensors, chambers, connecting ports, heat exchangers, and cooling towers. These components work together to optimize energy efficiency and regulate the temperature within the system. For instance, the system may consist of airside economizers with different air intakes for return air and outdoor air, a controller to determine cooling modes based on enthalpy calculations, an economizer chamber with connecting ports for condenser and evaporator, and heat exchangers like surface and plate heat exchangers along with a cooling tower for heat transfer and maintaining temperature stability during testing. By integrating these components, the economizer system can effectively enhance energy conservation and system performance.
What is the function of an expansion valve in a refrigeration system?
5 answers
The expansion valve in a refrigeration system serves the crucial function of regulating the flow of refrigerant, facilitating the pressure drop necessary for the refrigerant to evaporate and absorb heat from the surroundings effectively. In various systems, such as air conditioners and refrigerators, the expansion valve plays a key role in controlling the mass flow rate and temperature difference across the valve, impacting system efficiency. Different types of expansion valves, like capillary tubes or electronic expansion devices, are utilized to enhance system performance by improving evaporator filling and cycle efficiency. Additionally, advancements like energy recovery expansion devices, such as the Viper Expander, have been developed to reduce losses during throttling and improve the coefficient of performance (COP) in refrigeration systems, particularly in transcritical CO2 cycles.
Can oil dissolve by heater?
5 answers
Oil cannot dissolve by a heater; however, heaters play a crucial role in various processes involving oil. For instance, in a steam power plant, a fuel oil heater is used to heat oil residue with steam, affecting its viscosity for use as fuel. In another study, a solar oil heater was utilized in the distillation process of ethanol, showcasing the efficiency of solar collectors in providing heat energy. Additionally, a medium-frequency induction heater was proposed to enhance heating efficiency in oil wells, addressing issues related to power imbalance and poor utilization of electric apparatus. Furthermore, research on thermal faults in transformers highlighted the limitations of immersed heating methods, affecting fault gas generation characteristics in alternative liquids. Overall, while oil itself does not dissolve by a heater, heaters are essential in various industrial processes involving oil heating and transformation.
What is sewage Waste?
4 answers
Sewage waste refers to discarded or unwanted materials from human domestic and industrial activities that are carried in water, known as sewage. Various devices have been developed for processing sewage waste, such as sewage waste pulverizing devices that enable automatic processing and disposal into sewage systems. Additionally, sewage waste collection devices have been designed to facilitate the removal and filtering of waste materials from sewage treatment barrels, enhancing efficiency and ease of maintenance. Furthermore, innovative waste sewage heat recycling devices have been created to recover heat from processed sewage, demonstrating high energy utilization rates and applicability in waste heat recovery systems. Overall, sewage waste encompasses materials requiring proper treatment and disposal methods to manage environmental impacts effectively.
Do plants Photosynthese on bottom of Leaders?
5 answers
Plants do not photosynthesize on the bottom of leaders, as indicated by the study on loblolly pine trees where the removal of bark and phloem below the terminal cohort led to a decrease in photosynthetic capacity. However, the concept of utilizing photosynthesis for air purification involves enhancing photosynthesis through forced convection between plants and air, facilitated by a lamp bulb and a built-in fan in an air purification device. Additionally, the Internet of Plants (IoP) concept aims to visualize and share information on crop physioecological processes, emphasizing the importance of understanding and utilizing photosynthesis in agriculture. Therefore, while plants do not photosynthesize on the bottom of leaders, optimizing photosynthesis through innovative techniques can enhance plant growth and productivity.
What are the best published papers about emsculpt machine?
4 answers
The best published papers about machine tools include a study on superconducting electromagnetic suspension (EMS) technology for enhancing manufacturing accuracy in NC machine tools. Another paper discusses a novel machine tool design approach based on surface generation simulation, which was implemented on a fly cutting machine tool, showcasing academic excellence and industry application potential. Additionally, an electronic machine capable of automatically searching for other contact persons related to a target contact person is presented, streamlining user operations and saving time. Furthermore, an electronic machine equipment is described that can determine actions based on user actions without pre-planned routes, enabling the accomplishment of multiple service tasks efficiently. These papers contribute significantly to the advancement of machine tool technology and electronic machine capabilities.
What are the parameters of heat exchanger?
5 answers
The parameters of a heat exchanger include various factors such as geometric dimensions, operational conditions, and thermophysical properties. Geometric parameters like length, diameter, and wall thickness of the heat exchanger components play a crucial role in determining its efficiency. Operational parameters such as air flow rate through the heat exchanger and the time for accumulation/regeneration of thermal energy are also significant in influencing its performance. Additionally, thermophysical properties like density and heat capacity of the material used in the heat exchanger impact its thermal efficiency. Furthermore, factors like the design of the heat exchanger, including the presence of grooves and bulkheads, and the velocity of the flowing medium also affect the heat transfer characteristics of the system.
How does the heat transfer efficiency of convection compare to other heat transfer mechanisms for liquid food?
5 answers
Convection, a heat transfer mechanism in fluids, is notably more efficient than conduction for liquid foods due to fluid motion enhancing heat transfer significantly. In the context of canned liquid foods, natural convection during cooling can alter the convective heat transfer coefficient, impacting the overall efficiency of heat transfer. Studies on canned Newtonian and non-Newtonian liquids reveal that convection plays a substantial role, contributing significantly to heat transfer, especially in non-Newtonian fluids where conduction effects are also observed. Research on thermal sterilization of viscous liquid foods emphasizes the superiority of natural convection over conduction, leading to faster temperature rise and enhanced lethality, showcasing the dominance of convection in improving heat transfer efficiency for liquid foods.
What is the Mechanism of convection in canning process?
5 answers
In the canning process, convection plays a crucial role in heat transfer within the container. Natural convection, driven by temperature variations, is significant in transferring heat to canned viscous liquids. It enhances temperature rise and lethality compared to conductive heating alone, impacting sterilization efficiency. The presence of headspace in cans affects heat transfer rates, accelerating the process by facilitating faster heating. Convection in cans involves complex fluid dynamics, where heat is transferred through the movement of the liquid, impacting the overall heating rates and efficiency of the sterilization process. Understanding and optimizing convection mechanisms are essential for efficient and safe canning processes, ensuring proper sterilization and preservation of food products.