News – Aira

Checking for correct airflow

Tilda Lester — Thu, 05 Dec 2019 12:48:11 +0000

Indoor airflow in any air conditioning system is critical. Too much air and the customer suffers lack of dehumidification in cooling. Too little air in cooling may freeze the coil causing damage to both indoor coil and outdoor compressor.

Checking airflow is one of the most important checks. Instruments can measure pressure drop across the coil. If pressure drop tables are available, they indicate the cubic feet of air per minute (cfm) moving through the coil. An inclined manometer or Magnehelic gauge are examples of this type of instrument.

A velometer measures the velocity of the air in feet per minute (fpm). If the area of duct is known, the velometer reading times the area of duct (in square feet) calculates the airflow.

There are also simple mathematical formulas that are needed. All of them require measurements be taken. These measurements require a voltmeter, ammeter, and a good temperature tester.

Recording cooling differences

Christoph Lebuteur — Thu, 05 Dec 2019 12:47:20 +0000

A common problem in product design—particularly in electronics—is managing thermal conditions for optimal efficiency. The core of the challenge is designing energy-efficient microprocessors and printed circuit boards (PCBs) that will not overheat.

A frequently overlooked aspect of thermal management problem solving is architectural design. Whether it’s a private home, an office building, or a dedicated server room, architectural considerations can have a huge impact on the thermal management solutions available.

To tackle and alleviate the difficulties and inefficiencies that arise as a result of heat, engineers employ different cooling systems to manage conditions. These systems can be divided into two main categories: those with active and with passive cooling techniques. But what is the difference between them?

The advantages of passive cooling techniques lie in the energy efficiency and lower financial cost, making it an astute systems design choice for the thermal management of both buildings and electronic products.

How Does A Swamp Cooler Work?

Rowan Strickland — Thu, 05 Dec 2019 12:46:28 +0000

Have you ever traveled to a place with high humidity? You may have found your hair curled, your skin was softer, but you seemed to sweat a lot more. Your body used the moisture in the air to make you sweat, and cool you down; a process called evaporative cooling. This same principle is used when it comes to swamp coolers. Swamp coolers are prevalent in warm, dry areas, such as Utah, Nevada and Arizona, where there’s less moisture in the air, and evaporative cooling can work by adding moisture in the air. But how does a swamp cooler actually work? The following animations will give you a better idea of what’s happening in that machine that makes you comfortable in those warm summer months.

A swamp cooler uses moisture to cool air. A swamp cooler (which is also called an evaporative air conditioner) works by taking warm outside air through wet evaporative cooler pads, effectively cooling the air. The cold air is then blown into a home by a blower motor through a vent. The main parts of a swamp cooler can be found in the diagram below.