Laboratory Refrigerators
Laboratory Refrigerators - Related Videos
12:09
Introduction to Refrigeration
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2023
Source: Alexander S Rattner and Christopher J Greer; Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA This experiment demonstrates the principles of vapor compression refrigeration. The vapor compression cycle is the dominant refrigeration technology, found in most refrigerators, freezers, air-conditioning systems, and heat pumps. In this cycle, cooling (heat acquisition) is achieved with low-pressure evaporation of refrigerant. Thermal...
07:18
Experimental System of Solar Adsorption Refrigeration with Concentrated Collector
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Cited by 5 •
2017
With solar energy as the driving force, a novel adsorption refrigeration system has been developed and experimentally investigated. Water vapor and zeolite formed the working pair of the adsorption system. This manuscript describes the setup of the experimental rig, the operation procedure, and the important results.
01:07
Refrigerators and Heat Pumps
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2023
Refrigerators or heat pumps are heat engines operating in a reverse direction. For a refrigerator, the focus is on removing heat from a specific area, whereas, for a heat pump, the focus is on dumping heat into one particular area. A refrigerator (or heat pump) absorbs heat Qc from the cold reservoir at Kelvin temperature Tc and discards heat Qh to the hot reservoir at Kelvin temperature Th, while work W is done on the engine’s working substance. A household refrigerator removes heat from the...
08:00
Measuring Mass in the Laboratory
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2023
The analytical balance is the common piece of equipment in the scientific laboratory. These highly precise instruments can measure down to ten thousandths or even hundred thousandths of a gram. The triple beam balance is a type of scale that uses counterweights on a three rider beams to counterbalance the sample in the pan. On the other hand, modern analytical balances use a complex system of electronic sensors to accurately mass a substance. The analytical balance is so sensitive that it...
06:19
Decontamination for Laboratory Biosafety
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2023
Robert M. Rioux and Zhifeng Chen, Pennsylvania State University, University Park, PA Decontamination is essential for laboratory biosafety, as the accumulation of microbial contamination in the laboratory can lead to the transmission of disease. The degree of decontamination can be classified as either disinfection or sterilization. Disinfection aims to eliminate all pathogenic microorganisms, with the exception of bacterial spores on lab surfaces or equipment. Sterilization, on the other hand,...
FAQs
The compressor drives refrigerant through the evaporator and condenser. Inside the storage chamber, the evaporator enables the refrigerant to absorb heat; the refrigerant then carries that heat to the condenser, where it is released outside the appliance. This repeated transfer provides the cooling needed to preserve temperature-sensitive biological materials.
The thermostat regulates the cooling cycle in relation to the selected set temperature. By controlling when cooling operates, it helps maintain defined storage conditions rather than allowing the chamber temperature to change without control. This regulation matters because enzymes, antibodies, culture media, buffers, and specimens depend on consistent conditions for preservation and experimental reliability.
Monitoring provides evidence that stored materials remain under their intended conditions, while organization helps place and manage products appropriately within the storage chamber. Together, these practices support sample integrity, limit degradation, and promote laboratory safety. They also help preserve experimental consistency when biological materials are used in later procedures.
Begin by identifying the material and its defined storage condition, then place it in an organized storage area and maintain the refrigerator at the appropriate set temperature. Continue monitoring the temperature during storage rather than relying only on the initial setting. This workflow helps protect reagents, specimens, and other products from degradation and supports dependable biological experiments.
Relevant examples include culture media, enzymes, antibodies, buffers, and biological specimens. These materials differ in function, but each can be affected by unsuitable storage conditions, making controlled preservation important. Keeping them under defined conditions helps limit degradation and maintains the consistency of materials used in biology experiments.
Stable storage conditions help preserve the integrity of reagents and specimens between preparation and use. That preservation reduces the likelihood that degradation will alter biological materials and supports more consistent experimental conditions. Consequently, the refrigerator contributes not only to product storage but also to the reliability and reproducibility of laboratory work.