As we can see,1 therms is equal to 29.308323 kWh. That means that the therms to kWh formula looks like this: kWh = Therms × 29.308323 kWh Per Therm Quick Example: How many kWh of electricity do we get if we burn 50 therms of gas? We just use this equation and calculate the genera...
A heat that is responsible to increase or decrease the temperature of a substance without affecting the phase of the substance is called the sensible heat while the heat that is responsible for the phase change without affecting ...
The gradient measurements were applied to Fick's gradient diffusion equation to calculate the CO2 efflux from the soil. Diffusivities of CO2 were computed as a function of soil moisture using algorithms developed by Moldrup et al. [2003]. Additional information on the concentration profile ...
Calculate how many joules of energy would be needed to take 2 kg of ice at -5{eq}^\circ C {/eq} and turn it all to steam at 100{eq}^\circ C {/eq}? Heat. It is the flow of thermal energy due to a difference in temperatu...
Based on that, we can calculate how long should it take to cool a house from 80°F to 72°F or by 2 degrees, for example. As you might imagine, how long does it take to cool down a house depends on several factors. Theoretically speaking, we can presume that the heat capacity of...
A better way to figure out how much to drink on a bike ride is to calculate how much fluid you lose. Bear in mind it’s not necessary or desirable to replace all the water lost on the ride itself – just try not to lose more than two per cent body mass. ...
(6) to calculate Ts; use Ts to calculate r1 (Eq. (4)) and both to calculate S (Eq. (5)); (3) plot pairs of Ts and S in Ts–S–r1-diagram (Fig. 1) and assign data to cases 1–3 based on r1. Fig. 2 gives examples, for the times of sunrise, noon and sunset at ...
Step 2: Select trap model according to operating pressure, temperature, orientation, and any other relevant conditions. Step 3: Calculate application load requirements and apply the trap manufacturer’s recommended safety factor. Step 4: Base the final trap selection on lowest Life Cycle Cost (LCC...
There is a limit to the temperature difference across the cooling coil that air-cooled equipment can produce because of the refrigeration cycle. These types of units can typically produce a 20°F to 25°F delta T in the cooling condition. An engineer should always calculate the entering air ...
Using those two formulas, we can calculate that a 3,000 sf house with 3 bedrooms would need 60 cfm under the IRC rule and 120 cfm using ASHRAE 62.2. Another way to look at the ventilation rate would be in terms of air flow per person. With the four hypothetical people in this house...