How much energy does your household consume? 1. Observe: In the Gizmo, go through the house, clicking on the different electrical appliances Which appliances have the highest wattages? 2. Form hypothesis: Which household appliances do you think use the most energy in a day? Gather data: Choose the USAGE tab. Select each appliance that is used in your house, and estimate its daily usage. (For appliances you use less frequently, such as the clothes dryer, think about how much it is used in a week, and then divide by seven) Water heaters are on about five hours per day, and refrigerators are on about eight hours per day. Record wattages, your daily usage estimates, and daily energy consumptions for your household in the tables below. Include units. Room Appliance Wattage (kW) Daily usage Daily consumption (kWh) Bedroom Incandescent light Printer Computer Hair dryer Electric blanket Small fan Halogen lamp Television set Paddle fan Air conditioner Large lamp Stereo system Reading light Living room Activity B (continued from previous page) Room Applianco Wattage (kW) Daily usage (h) Daily consumption (kWh) Kitchen Refrigerator Electric stove Microwave oven Fluorescent light Dishwasher Coffee maker Toaster Kettle Dryer Washer Laundry
The Correct Answer and Explanation is :
To answer this question, let’s first break down the task. We are trying to analyze the energy consumption in a household based on different appliances. We’ll calculate the daily energy consumption for each appliance, considering their wattages and daily usage.
Step 1: Highest Wattages Appliances
Appliances with higher wattages tend to consume more energy. In your household, some of the appliances that typically have high wattages include:
- Air conditioners: These usually have high wattage (ranging from 1.5 kW to 3 kW, depending on the size and power).
- Electric stove: These also typically use a lot of energy, with wattages ranging from 1.5 kW to 3 kW.
- Water heaters: These can have a wattage of 3-4 kW and are often used for extended periods during the day.
- Refrigerators: Though their wattage is relatively low (around 0.1 kW to 0.2 kW), they run for several hours throughout the day, often continuously.
Step 2: Hypothesis on Most Energy-Consuming Appliances
From the appliances listed above, we can hypothesize that the air conditioner, electric stove, and water heater are likely the most energy-consuming appliances in a household. This is because they have relatively high wattages and are often used for extended periods.
Step 3: Daily Energy Consumption Calculation
To calculate the energy consumption for each appliance, use the formula:
[
\text{Daily Energy Consumption (kWh)} = \text{Wattage (kW)} \times \text{Daily Usage (hours)}
]
Let’s go through the appliances and calculate the daily consumption based on typical values:
| Room | Appliance | Wattage (kW) | Daily Usage (h) | Daily Consumption (kWh) |
|---|---|---|---|---|
| Bedroom | Incandescent light | 0.06 | 3 | 0.18 |
| Printer | 0.1 | 1 | 0.1 | |
| Computer | 0.3 | 4 | 1.2 | |
| Hair dryer | 1.5 | 0.5 | 0.75 | |
| Electric blanket | 0.15 | 8 | 1.2 | |
| Small fan | 0.03 | 6 | 0.18 | |
| Halogen lamp | 0.3 | 2 | 0.6 | |
| Television set | 0.1 | 4 | 0.4 | |
| Paddle fan | 0.05 | 5 | 0.25 | |
| Air conditioner | 2.0 | 6 | 12 | |
| Large lamp | 0.05 | 3 | 0.15 | |
| Stereo system | 0.2 | 2 | 0.4 | |
| Reading light | 0.04 | 4 | 0.16 | |
| Living Room | Refrigerator | 0.15 | 8 | 1.2 |
| Electric stove | 2.0 | 2 | 4 | |
| Microwave oven | 1.0 | 1 | 1.0 | |
| Fluorescent light | 0.02 | 6 | 0.12 | |
| Dishwasher | 1.5 | 1 | 1.5 | |
| Coffee maker | 0.8 | 1 | 0.8 | |
| Toaster | 1.2 | 0.25 | 0.3 | |
| Kettle | 2.0 | 0.5 | 1.0 | |
| Dryer | 3.0 | 0.5 | 1.5 | |
| Washer | 1.0 | 1 | 1.0 |
Total Daily Consumption:
- The air conditioner and electric stove consume the most energy in a day, with 12 kWh and 4 kWh respectively.
Conclusion:
This table provides a comprehensive view of your household’s daily energy consumption. The air conditioner, electric stove, and water heater stand out as the largest energy consumers.
Let me generate an image for better visualization of these consumption figures.
Here is a visual representation of your household’s energy consumption. This table shows the appliances, their wattages, daily usage, and energy consumption (in kWh). It highlights how much energy each appliance consumes on a daily basis.
Let me know if you’d like any further details or calculations!
