Why does a desert cooler better on ahot day

The cooling in a desert room cooler is caused by the evaporation of water. A desert cooler cools better on a hot and dry day because the higher temperature on a hot day increases the rate of evaporation of water, and the dryness of air (low humidity of air) also increases the rate of evaporation of water. And due to increased rate of evaporation of water, a desert room cooler cools better on a hot and dry day.

On a hot dry day desert cooler cool better because the surrounding is less humid or the atmosphere has less water particles(moisture), as a result of which even a small force of wind or blow of air(by desert cooler) can move these particles away and empties the atmosphere from those moistures and generates more space for our sweat particles or any other water particles and thus makes the evaporation process more efficient. NCERT solutions of related questions for Matter in our Surroundings • Q 1. Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold, cold-drink, smell of perfume. • Give reasons for the following observation: The smell of hot sizzling food reaches you several meters away, but to get the smell from cold food you have to go close. • A diver is able to cut through water in a swimming pool. Which property of matter does this observation show? • What are the characteristics of the particles of matter? • The mass per unit volume of a substance is called density. (density=mass/volume). Arrange the following in the order of increasing density – air, exhaust from the chimneys, honey, water, chalk, cotton and iron. • Answer the following. a) Tabulate the differences in the characteristics of matter. b) Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density. • Give reasons a) A gas fills completely the vessel in which it is kept. b) A gas exerts pressure on the wall...

Introduction When the temperature starts to rise, we all look for ways to beat the heat. One of the most common ways is by using a desert cooler, which is also known as an evaporative cooler. But have you ever wondered why a desert cooler seems to cool better on a hot dry day? In this article, we will explore the science behind this phenomenon. What is a Desert Cooler? Before we dive into the details of how a desert cooler works, let’s first understand what it is. A desert cooler is a cooling device that uses the principle of evaporation to cool the air. It consists of a water tank, a pump, a fan, and a cooling pad. The pump circulates water from the tank to the cooling pad, which is made of a material that absorbs water. The fan then blows air through the wet cooling pad, and the evaporation of water cools the air. How Does a Desert Cooler Work? Now that we know what a desert cooler is, let’s take a closer look at how it works. The cooling process starts when the pump circulates water from the tank to the cooling pad. The cooling pad is designed to have a large surface area, which allows for maximum evaporation of water. As the air passes through the wet cooling pad, the water evaporates and absorbs heat from the air. This cools the air and increases its humidity. Why Does a Desert Cooler Cool Better on a Hot Dry Day? A desert cooler works best in hot and dry climates because of the way it cools the air. In hot and dry weather, the air is less humid, which means that it c...

When a liquid evaporates, the particles of the liquid absorb energy from the surroundings to compensate the loss of energy during evaporation. This makes the surroundings cool. In a cooler, the water inside it is made to evaporate. This leads to absorption of energy from the surroundings, thereby cooling the surroundings. Again, we know that evaporation depends on the amount of water vapour present in air (humidity). If the amount of water vapour present in air is less, then evaporation is more. On a hot dry day, the amount of water vapour present in air is less. Thus, water present inside the desert cooler evaporates more, thereby cooling the surroundings more. That is why a cooler cools better on a hot dry day.