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A glass still head, upside down. The rounded part was meant to be fitted on the top of the boiling flask. Black-and-white photo of object at the Wellcome Trust museum. The still head is another ancient type of air-cooled condenser. It consists of a roughly globular vessel with an opening at the bottom, through which the vapor is introduced.
A Med-E-Jet vaccination gun from 1980. A jet injector, also known as a jet gun injector, air gun, or pneumatic injector, is a medical instrument that uses a high-pressure jet of liquid medication to penetrate the skin and deliver medication under the skin without a needle. Jet injectors can be single-dose or multi-dose.
A typically 25% efficiency standard solar still (not allowing for any recovery of rejected latent heat), as the latent heat of vaporization of water is 2.26 MJ per kilogram, [3] should evaporate 2.4 kg (or liters) of water per m 2 per day in a region with an average daily solar irradiation of 21.6 MJ/m 2 (250 watts/m 2), or 873 liters per year ...
In microbiological practices, constant shaking allows liquid-grown cell cultures grown to constantly mix with the air. Some key benefits of shaking water bath are user-friendly operation via keypad, convenient bath drains, adjustable shaking frequencies, bright LED-display, optional lift-up bath cover, power switch integrated in keypad and ...
The standard settings for a hot air oven are: 1.5 to 2 hours at 160 °C (320 °F) 6 to 12 minutes at 190 °C (374 °F)....plus the time required to preheat the chamber before beginning the sterilization cycle. If the door is opened before time, heat escapes and the process becomes incomplete.
To do this, a sample was harvested and placed onto a sterile dish and into the incubator. The air in the incubator was kept at 37 degrees Celsius, the same temperature as the human body, and the incubator maintained the atmospheric carbon dioxide and nitrogen levels necessary to promote cell growth.
A condenser unit used in central air conditioning systems typically has a heat exchanger section to cool down and condense incoming refrigerant vapor into liquid, a compressor to raise the pressure of the refrigerant and move it along, and a fan for blowing outside air through the heat exchanger section to cool the refrigerant inside. A typical ...
Heat must be brought in or removed from a reactor. A continuous circulation of solids between vessels can efficiently transport heat from one vessel to another since solids have relatively large heat capacity compared to gases. One important factor of circulating systems is the ability to control the feed circulation rate.