Before buying an air conditioner, you have to make the AC tonnage calculation. Not sizing an AC unit properly can cause $1,000s in wasted AC costs or future electricity costs. According to the DOE, “…an air conditioner generally needs 20 BTU for each square foot of living space.” We need to convert BTU to tonnage. ... Read more| LearnMetrics
If you play around with electronics and telecommunications, you will sometimes need to convert watts to dBm. Namely, we are converting power in watts to power in decibel-milliwatts (dBm). The conversion is a bit complex, that’s why we prepared these 2 tools that make all of this very simple: Watts To dBm Calculator. Simply input ... Read more The post Watts To dBm Calculator: Convert Watts To dBM (+ Conversion Chart) appeared first on LearnMetrics.| LearnMetrics
Many household appliances run on 240 watts. These include 240W ceiling fans, lamps with two 120W bulbs, small 240W heaters, 240W laptops, low-power microwave setting, 240W older plasma TVs, and 240W gaming consoles. We are going to look at 3 things that people running 240-watt appliances need to know, namely: How much electricity does a ... Read more The post How Much Does 240 Watts Cost Per Hour? kWh Usage, $ Cost appeared first on LearnMetrics.| LearnMetrics
Both lb/gal (pounds per gallon) and kg/m3 (kilograms per cubic meter) are units of density. In some cases, you will want to convert lb/gal to kg/m3. Just a tidbit: lb/gal is more than 100-times bigger unit than m3/kg. To help you out with the conversion, we have created these 2 tools you can freely use: ... Read more The post lb/gal To kg/m3 Calculator: Convert lb/gallon To kg/m3 Online appeared first on LearnMetrics.| LearnMetrics
When calculating density, you will sometimes have to convert kg/m3 to lb/gallon (kilograms per cubic meter to pounds per gallon). Basically, kg/m3 is more than 100 times larger unit than lb/gal. To help you make this conversion quickly, we prepared these 2 key tools you will need, namely: kg/m3 to lb/gallon calculator. Just input kg/m3, ... Read more The post kg/m3 To lb/gal Calculator: Convert kg/m3 To lb/gallon appeared first on LearnMetrics.| LearnMetrics
The density of natural gas is usually expressed in kg/m3 (kilograms per cubic meter) or lb/ft3 (pounds per cubic foot). Natural gas density is customarily measured at standard conditions (STC); this includes standard temperature (0°C or 32°F) and standard pressure (1 atmosphere or 14.7 psia). Natural gas has a very low density (it’s lighter than ... Read more The post What Is Density Of Natural Gas? In kg/m3, lb/ft3 (Standard Conditions) appeared first on LearnMetrics.| LearnMetrics
Sometimes, you need to know the density of gasoline (also referred to as the ‘specific gravity of gasoline‘). We can express the density of gasoline in different density units, namely kg/m3 (kilograms per cubic meter), lb/gallon (pounds per gallon), kg/L (kilograms per liter), and lb/ft3 (pounds per cubic foot). Gasoline is one of the lightest ... Read more The post Gasoline Density In kg/m3, lb/gal, kg/L, lb/ft3 (+ Chart) appeared first on LearnMetrics.| LearnMetrics
When you are putting gas into a car, how much weight are you adding? We only know how many gallons of gasoline (volume) we put into the can; the gas station does tell us how many pounds of weight that is. To calculate that, we need to apply the 5.97-6.51 lb/gallon density (at 59°F or ... Read more The post Gasoline Weight Calculator: How Much Gas Weights? (Gallons -> Lbs) appeared first on LearnMetrics.| LearnMetrics
At gas stations, the diesel pump measures volume (gallons), not weight (lbs). To figure out, for example, how much 10 gallons of diesel weighs, we need to account for diesel density. To help you calculate the diesel fuel weight, we have created these 2 tools you can freely use: Diesel Fuel Weight Calculator. Just enter ... Read more The post Diesel Fuel Weight Calculator: How Much Diesel Weighs? (Gallons -> Lbs) appeared first on LearnMetrics.| LearnMetrics
When dealing with laptops, power banks, smartphones, and other small electronics, you will sometimes need to convert battery capacity from mWh to mAh (milli Watt-hours to milli Amp-hours). To help you out with this conversion, we prepared these 2 online tools you can use yourself anytime: mWh to mAh calculator. You simply input mWh and ... Read more The post mWh To mAh Calculator: Convert milli Watt-hours To milli Amp-hours appeared first on LearnMetrics.| LearnMetrics
When dealing with small electronics (phones, smartwatches), laptops, or power banks, you will sometimes need to convert mAh to mWh (milli Amp-hours to milli Watt-hours). To help you with the conversion, we prepared these 2 key tools: mAh to mWh calculator. Here, you insert mAh and the voltage (usually 3.7V or 5V for phones, smartwatches, ... Read more The post mAh To mWh Calculator: Convert milli Amp-hours To milli Watt-hours appeared first on LearnMetrics.| LearnMetrics
Starting in 2023, a lot of people started asking us what is the difference between SEER and SEER2 ratings. This surge in interest in the SEER2 rating is understandable. From 1st January 2023, all new HVAC units started listing SEER2 rating on their specs sheets. Here’s why we see a lot of these SEER vs ... Read more| LearnMetrics
EER rating is the most basic energy efficiency rating for air conditioners. In 2023, the Department of Energy will introduce a new EER2 rating that will replace the existing EER rating. Let’s look at what the EER2 rating is and what changes we can expect for the minimum EER rating in 2023 (now EER2 rating). ... Read more| LearnMetrics
EER and SEER both measure the energy efficiency of HVAC devices such as air conditioners and heat pumps. EER = ‘Energy Efficiency Ratio’ measures energy efficiency at 100% cooling load, 50% humidity, and 95°F to 80°F temperature difference. SEER = ‘Seasonal Energy Efficiency Ratio’ measures energy efficiency throughout the summer (June, July, August). You can ... Read more| LearnMetrics
There are several HVAC metrics for energy efficiency. In many cases, the Energy-Efficiency Ratio (EER) is specified on the specification sheets. However, one of the most basic heating/cooling metrics – Coefficient Of Performance (COP) – is not. Fortunately, you can easily convert COP from EER (as well as EER from known COP) with these two ... Read more| LearnMetrics
COP of heat pump is calculated by dividing useful heat (or cold) an HVAC device will produce if we give it certain energy input . The highest COP heap pump can achieve is more than 20 (theoretically).| LearnMetrics