Use the f-chart to determine the amount of solar energy that can be delivered in Little Rock, AR, in January for the following solar and building conditions:
Building
Load: 40 million Btu/month
Latitude: 35°N
Solar system
Collector tilt: 55°, facing south
Area: 1000 ft2
Ambient temperature: 40.6°F
Collector efficiency curve: see Figure 7.19
No heat exchanger used
Nominal storage, flow rate, and load heat-exchanger values used
![2220_ad4f192d-041f-4535-a172-76813eac5c7d.png](https://secure.tutorsglobe.com/CMSImages/2220_ad4f192d-041f-4535-a172-76813eac5c7d.png)