Vacuum evaporation preserves and concentrates food and beverages, resulting in longer shelf life, lower weight and volume, and less packaging. A vacuum evaporator contains a heat exchanger, vapor-liquid separator, and vacuum producer. It is used in various industries, including food, semiconductor, microelectronics, and optical. Vacuum evaporation is a technique that is often used by manufacturers […]
Vacuum degassing removes dissolved gas from liquids by lowering pressure in a vessel. It is used in water treatment, laboratory testing, and soil purification. The process is used to improve purity or solid state strength and can remove sulfur gases from water. It is also used to quickly scrub gases from laboratory test samples and […]
Refrigeration vacuum pumps remove moisture and air from AC/R systems by creating a deep vacuum, boiling water and expelling steam and air. They are typically rotary with two-stage operation and can produce values of 50 microns or less. It is important to use the correct size pump and maintain oil levels. A refrigeration vacuum pump […]
Vacuum filtration separates solids from liquids using a filter and vacuum pump. It is commonly used to collect recrystallized solids and separate solids from unsaturated solutions. The amount of solid collected depends on the filter paper’s pore size. Vacuum filtration is a separation method used to remove a solid from a liquid. Generally the solid […]
Vacuum tubes were widely used in electronic devices before transistors and integrated circuits. They were invented after Thomas Edison observed the Edison Effect. Vacuum tubes are still used in some specialized devices, including military applications and electric guitar amplifiers. They work by heating filaments to release electrons, which are attracted to a positively charged anode. […]
Vacuum excavation uses vacuum cleaners to remove soil, making it ideal for protecting workers and underground structures. The process involves spraying air or water to loosen soil, then using a vacuum to remove it. The method creates precise holes of specific sizes and shapes, making it easier to repair surfaces. Vacuum excavation is particularly useful […]
A vacuum lifter is used to handle glass and other objects safely. It consists of a suction cup and hand vacuum pump, mounted on an adjustable frame. The suction cup offers versatility, is easy to use, and requires minimal maintenance. It saves employers money and reduces the likelihood of objects getting damaged. Different sizes and […]
Ultra-high vacuum has pressures below 10-7 pascals and is used for surface analytical techniques and particle accelerators. Achieving it requires special measures such as minimizing surface area, using high-speed pumps, and eliminating trapped gas. It can be expensive and difficult, but some environments are even better vacuum. Ultra-high vacuum refers to pressures below 10-7 pascals […]
A false vacuum is a theoretical bubble that can change the laws of physics if it collapses or an object crosses it. Earth may be in a false vacuum, and it could affect the charge of electrons and the types of particles that can exist. The many-worlds interpretation suggests that one world may survive while […]
Vacuum packaging removes air from waterproof plastic bags to reduce oxidation and prevent spoilage, extending the shelf life of perishable foods. It also reduces bacterial growth and freezer burn. Vacuum-packed foods still require refrigeration, and vacuum packing is not a substitute for heat sterilization. Vacuum packaging is the process of packing items, especially perishable products […]
A pressure vacuum breaker prevents contaminated water from entering a clean water supply in irrigation systems. It uses a spring-loaded valve to isolate fresh water supplies and should be installed on all water hoses or lines used for irrigation, filling swimming pools, feeding chemical or fertilizer mixers, or for applying pesticides. A pressure vacuum breaker […]
Vacuum deposition involves depositing particles onto a surface under vacuum to prevent interference or reaction with gas particles. It can serve various purposes, such as protecting metals from corrosion. Physical and chemical vapor deposition are common methods used. Vacuum allows scientists to control the vacuum composition of the chamber. The term vacuum deposition describes a […]
A vacuum coffee maker uses a strong flavor and perfectly mixes water and coffee. It consists of two glass pots, with the bottom one filled with water and the top one with coffee grounds. The pots are sealed and heated, then left to mix for 3-4 minutes. The cooling process creates a vacuum, and the […]
Vacuum distillation separates volatile compounds from a liquid mixture by reducing pressure, inducing evaporation, and capturing and condensing the vapor. It is used in petroleum refining and can separate hundreds of hydrocarbons. It is suitable for high boiling point compounds and those dissolved in water. The apparatus can be simple or complex, from laboratory setups […]
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