Which flow type is the most efficient flow type?

Which flow type is the most efficient flow type?

Counter flow heat exchangers are the most efficient of the three types. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest cold- fluid temperature greater than the coldest hot-fluid temperatue.

Can log mean temperature difference be negative?

According to the definition modeled above, LMTD cannot be negative. According to the definition modeled above, LMTD cannot be negative.

What is mean temperature?

The average temperature of the air as indicated by a properly exposed thermometer during a given time period, usually a day, a month, or a year.

What is the temperature on the moon?

260 degrees Fahrenheit

What’s the normal temperature on a human?

All our lives, we’ve considered 98.6 degrees Fahrenheit to be normal body temperature.

How much is the normal body temperature?

“Normal body temperature may be slightly higher or lower than 98.6°F,” Taroyan says. “For a typical adult, body temperature can be anywhere from 97°F to 99°F.”

Is it bad to have a temp of 96?

If you have a body temperature of 96, you don’t necessarily need to worry. Although low body temperature is associated with several health risks, in some cases, a temperature of 96 is a normal fluctuation of the body’s temperature.

Can anxiety raise your temperature?

Chronic stress and exposure to emotional events can cause a psychogenic fever. This means the fever is caused by psychological factors instead of a virus or other type of inflammatory cause. In some people, chronic stress causes a persistent low-grade fever between 99 and 100˚F (37 to 38°C).

Is 99.7 considered a fever?

Fever. In most adults, an oral or axillary temperature above 37.6°C (99.7°F) or a rectal or ear temperature above 38.1°C (100.6°F) is considered a fever. A child has a fever when his or her rectal temperature is higher than 38°C (100.4°F) or armpit (axillary) temperature is higher than 37.5°C (99.5°F).