US2009214195A1PendingUtilityA1

PV water heating system

58
Individually held — no corporate assignee on recordPriority: Feb 25, 2008Filed: Feb 25, 2008Published: Aug 27, 2009
Est. expiryFeb 25, 2028(~1.6 yrs left)· nominal 20-yr term from priority
Inventors:Samuel L. Thomasson
F24D 2220/08F24D 11/004F24D 2200/02Y02B10/20F24D 2200/08F24D 2240/10F24D 11/003
58
PatentIndex Score
0
Cited by
0
References
0
Claims

Abstract

A system for heating water includes a first tank, a solar panel, a control circuit, and a second tank for receiving water from the first tank. There is a first resistive heating element in the first tank and a second resistive heating element in the second tank. The control circuit couples power from the solar panel to the second resistive heating element unless the water in the second tank is at a preset maximum temperature, then the control circuit couples power to the first resistive heating element. If the water in the second tank is below a preset maximum temperature and above a preset minimum temperature, then the control circuit couples power from the solar panel to both the first heater element and the second heater element. If the temperature of the water in the second tank is below a preset minimum temperature, then the control circuit turns on conventional heating means in the second tank. Water is withdrawn from the second tank for use.

Claims

exact text as granted — not AI-modified
1 . In a system for heating water including a first tank, a solar panel, a control circuit, and a second tank for receiving water from the first tank, the improvement comprising:
 a first resistive heating element in the first tank;   a second resistive heating element in the second tank;   wherein the control circuit couples power from the solar panel to the second resistive heating element unless the water in the second tank is at a preset maximum temperature, then the control circuit couples power to the first resistive heating element; and   water is withdrawn from the system through the second tank.   
   
   
       2 . The system for heating water as set forth in  claim 1  wherein the control circuit couples power from the solar panel to the first heater element and the second heater element when the water in the second tank is below a preset maximum temperature and above a preset minimum temperature. 
   
   
       3 . The system for heating water as set forth in  claim 1  wherein the second tank includes conventional water heating means. 
   
   
       4 . The system for heating water as set forth in  claim 3  wherein the control circuit turns on the conventional heating means when the temperature of the water in the second tank is below a preset minimum temperature. 
   
   
       5 . The system for heating water as set forth in  claim 3  wherein the control circuit turns on the conventional heating means when the temperature of the water in the second tank is below a preset minimum temperature and power is being coupled to the second resistive heating element. 
   
   
       6 . The system for heating water as set forth in  claim 3  wherein the conventional heating means is a resistive heater. 
   
   
       7 . The system for heating water as set forth in  claim 6  wherein the resistive heater and the second resistive heating element are attached to a single plug and share a common connection. 
   
   
       8 . The system for heating water as set forth in  claim 7  wherein the resistive heater conducts alternating current. 
   
   
       9 . The system for heating water as set forth in  claim 7  wherein the resistive heater conducts alternating current and the second resistive heating element conducts only direct current. 
   
   
       8 . The system for heating water as set forth in  claim 3  wherein the conventional heating means is a gas burner.

Join the waitlist — get patent alerts

Track US2009214195A1 — get alerts on status changes and closely related new filings.

We store only your email — no account needed. See our privacy policy.