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===[http://en.wikipedia.org/wiki/Properties_of_water 4. Storage temperature of water]=== | ===[http://en.wikipedia.org/wiki/Properties_of_water 4. Storage temperature of water]=== | ||
Before and since the mechanical refrigeration technology was invented ice has been in common use for preventing food spoilage. For the perfect storage solution the water should be kept near +4°C to make sure living organisms and fish could stay alive. Density of water is the maximum at the temperature of +4°C and is equal to 999.9720 Kg/m | Before and since the mechanical refrigeration technology was invented ice has been in common use for preventing food spoilage. For the perfect storage solution the water should be kept near +4°C to make sure living organisms and fish could stay alive. Density of water is the maximum at the temperature of +4°C and is equal to 999.9720 Kg/m<sup>3</sup>. | ||
As water has maximum density at 4°C of temperature it sits at the bottom of lake and the warmer or colder water then stays on top of it. Frozen ice is 0°C which floats on the layers of water having descending temperatures from 4°C to 0°C. If the water is warmer than 4°C the warmer water stays on top of water at the temperature of 4°C at the bottom. | As water has maximum density at 4°C of temperature it sits at the bottom of lake and the warmer or colder water then stays on top of it. Frozen ice is 0°C which floats on the layers of water having descending temperatures from 4°C to 0°C. If the water is warmer than 4°C the warmer water stays on top of water at the temperature of 4°C at the bottom. | ||
Revision as of 05:23, 1 February 2015
1. Vaccine Storage & Handling Toolkit, May 2014
This CDC guide tells us that the refrigerator we will be using for vaccine storage should not be dormitory type of refrigerator/freezer. The refrigerator we would use should be standalone refrigerator and maintain temperature between 35°F and 46°F (2°C and 8°C). Setting the average temperature around 40°F (5°C) and maintaining(stabilizing) it around that value is important. Freezing will damage the vaccines, so using standalone freezer which maintains temperatures between -58°F and +5°F (-50°C and -15°C) is recommended.
2. Medical Refrigeration
Medical refrigeration is essential to keep the medicines in good condition. Conventional refrigeration technique is not very good solution for medical refrigeration because conventional refrigerators don't maintain a uniform temperature in all different areas of the freezer or refrigerator. Without good refrigeration temperature(ideally should be 4°C) the medicines won't have potency to immunize or prevent the diseases. It will result in a life potentially lost.
3. Importance of maintaining cold chain cool
While transportation of medicine and vaccine, it is very important to keep the temperature cold between 2°C and 8°C with low electricity supply and in varying temperature conditions. Due to lack of good cooling system for vaccine and different whether during travel reports indicate that 75-100% of all vaccine shipments are compromised, immunization programs fail and countless lives are lost.
4. Storage temperature of water
Before and since the mechanical refrigeration technology was invented ice has been in common use for preventing food spoilage. For the perfect storage solution the water should be kept near +4°C to make sure living organisms and fish could stay alive. Density of water is the maximum at the temperature of +4°C and is equal to 999.9720 Kg/m3. As water has maximum density at 4°C of temperature it sits at the bottom of lake and the warmer or colder water then stays on top of it. Frozen ice is 0°C which floats on the layers of water having descending temperatures from 4°C to 0°C. If the water is warmer than 4°C the warmer water stays on top of water at the temperature of 4°C at the bottom.
5. Increase Solar Charging With An MPPT Power Tracking Charge Controller
Solar panels are used to track sunlight and heat and output power in terms of voltage and current. This is a webpage which explains why MPPT is essential to use in a battery charger. When we track sunlight using solar panel the heat and solar energy are trapped in solar cells and it gives rise to voltage and current. The amount of current and voltage we are getting depends on whether conditions also. Colder the whether more input voltage will be required which means that with the changing input voltage requirement the input and output impedance has to be matched to get the max output power. So MPPT does the same thing it matches the input and output resistance/impedance to get the maximum power output of solar panel which is given as input to the battery.