T-shirt Size Breakdown Calculator
Total T-shirts: 0
| Size | Chest Circumference (inches) | Length (inches) | Sleeve Length (inches) |
|---|---|---|---|
| XS | 32-34 | 27 | 8 |
| S | 36-38 | 28 | 8.5 |
| M | 40-42 | 29 | 9 |
| L | 44-46 | 30 | 9.5 |
| XL | 48-50 | 31 | 10 |
| XXL | 52-54 | 32 | 10.5 |
| XXXL | 56-58 | 33 | 11 |
FAQs
How do you size an evaporative cooler for a greenhouse? To size an evaporative cooler for a greenhouse, you’ll need to consider factors like the greenhouse’s square footage, the desired temperature drop, outside humidity, and air circulation. A rough estimate is about 2,000 to 3,000 CFM (cubic feet per minute) per 1,000 square feet of greenhouse area.
How do you calculate cooling load for a greenhouse? To estimate cooling load for a greenhouse, you can use this simplified formula: Cooling Load (BTU/hr) = Greenhouse Area (sq. ft.) x Temperature Difference (ΔT) (°F) x 0.133 Where ΔT is the desired temperature reduction.
Will an evaporative cooler work in a greenhouse? Yes, evaporative coolers can work well in greenhouses, especially in dry or arid climates. They provide efficient and cost-effective cooling by adding moisture to the air, which lowers the temperature.
How do you calculate evaporative cooling capacity? Evaporative cooling capacity is typically measured in CFM (cubic feet per minute). The capacity depends on the size and efficiency of the cooler. A rough estimate is 2,000 to 3,000 CFM per 1,000 square feet of greenhouse area.
How many gallons a day does an evaporative cooler use? An evaporative cooler can use approximately 2 to 15 gallons of water per hour, depending on its size and operating conditions. Over a day, this can range from 48 to 360 gallons.
Is a bigger evaporative cooler better? A larger evaporative cooler can provide more cooling capacity, but it should be appropriately sized for the greenhouse. Oversizing can lead to excessive humidity and energy waste.
How do you calculate cooling requirements? As mentioned earlier, use the formula: Cooling Load (BTU/hr) = Greenhouse Area (sq. ft.) x ΔT (°F) x 0.133 to estimate cooling requirements.
How do you calculate CFM for a greenhouse? A rough estimate is 2,000 to 3,000 CFM per 1,000 square feet of greenhouse area. Adjust this based on specific greenhouse conditions.
What is the disadvantage of evaporative air cooler? The main disadvantage of evaporative coolers is that they are less effective in high humidity environments. They can increase indoor humidity levels, which may not be suitable for some applications.
When should you not use evaporative cooling? Evaporative cooling is less effective in areas with high humidity, as it may not provide sufficient cooling and can increase indoor humidity levels.
What is the best cooling system for a greenhouse? The best cooling system for a greenhouse depends on factors like climate, greenhouse size, and budget. Besides evaporative coolers, options include fans, shade cloth, and even traditional air conditioning in some cases.
What is 30% humidity for an evaporative cooler? 30% humidity is relatively low and ideal for evaporative cooling. Evaporative coolers work best in dry conditions.
What is the maximum cooling for an evaporative cooler? The maximum cooling capacity of an evaporative cooler depends on its size and efficiency. As a rough estimate, it can lower the temperature by 10-20°F in dry climates.
What is too much humidity for an evaporative cooler? Humidity levels above 60-70% can significantly reduce the effectiveness of an evaporative cooler.
Can I run my evaporative cooler all day? Yes, you can run an evaporative cooler all day, as they are energy-efficient. However, monitor humidity levels to avoid excessive indoor humidity.
Can you run an evaporative cooler 24/7? Yes, you can run an evaporative cooler 24/7 if needed. They are designed for continuous operation.
How many gallons per hour does an evaporative cooler use? An evaporative cooler can use approximately 2 to 15 gallons of water per hour, depending on its size and operating conditions.
What size swamp cooler do I need for 2,000 square feet? For a 2,000 square foot area, you would generally need an evaporative cooler with a capacity of around 4,000 to 6,000 CFM.
Will an evaporative cooler work in 70% humidity? Evaporative coolers are less effective in high humidity environments, and 70% humidity may limit their cooling capacity.
How do I make my evaporative cooler colder? To make your evaporative cooler colder, you can:
- Ensure proper maintenance and clean water pads.
- Increase airflow by adjusting fan speed.
- Reduce indoor humidity levels by ensuring good ventilation.
What is the thumb rule in HVAC? One common thumb rule in HVAC is that for every 500 square feet of space, you typically need 1 ton (12,000 BTU) of cooling capacity.
How many BTU do I need for a 12×12 room? For a 12×12 room (144 square feet), you would typically need around 5,000 to 6,000 BTU for cooling.
How do you calculate BTU for cooling? Calculate BTU for cooling using this formula: BTU = Area (sq. ft.) x ΔT (temperature difference, °F) x 25 (common factor).
What is the fan airflow rate of a greenhouse? The fan airflow rate for a greenhouse varies but can range from 2,000 to 3,000 CFM per 1,000 square feet of greenhouse area.
How much air circulation does a greenhouse need? A greenhouse generally requires good air circulation to distribute heat and control humidity. Aim for 5 to 10 air changes per hour.
How many CFM per square foot for cooling? A rough estimate is 2 to 3 CFM per square foot for cooling in most residential and commercial settings.
What is the rule of thumb for cooling loads? A common rule of thumb for cooling loads is 20-25 BTU per square foot for residential spaces and higher values for commercial and industrial spaces.
How do you calculate CFM for cooling loads? Calculate CFM for cooling loads by dividing the cooling load (in BTU/hr) by the temperature difference (ΔT in °F) and then multiplying by 1.08 (a constant).
What are the disadvantages of evaporative cooling? Disadvantages of evaporative cooling include reduced effectiveness in high humidity, increased indoor humidity, and the need for a constant water source.
Should the windows be closed when using an evaporative cooler? It’s generally recommended to keep windows partially open when using an evaporative cooler to allow for proper ventilation and fresh air exchange.
How often does an evaporative cooler dump water? The frequency of water dumping in an evaporative cooler depends on the specific model and settings but typically occurs every few hours.
Can you run an evaporative cooler 24/7? Yes, you can run an evaporative cooler 24/7 if needed. They are designed for continuous operation.
How many air changes per hour for evaporative cooling? For effective evaporative cooling, aim for 20-30 air changes per hour in the space you want to cool.
Is it cheaper to run a swamp cooler or AC? Swamp coolers (evaporative coolers) are generally cheaper to operate than traditional air conditioning systems because they use less electricity.
What size swamp cooler do I need for 1,000 square feet? For 1,000 square feet, you would typically need an evaporative cooler with a capacity of around 2,000 to 3,000 CFM.
What is considered high humidity for evaporative cooling? Humidity levels above 60-70% are considered high for effective evaporative cooling.
Why doesn’t evaporative cooling work in high humidity? Evaporative cooling relies on the evaporation of water to cool the air. In high humidity, the air is already saturated with moisture, limiting the cooling effect.
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