Dalili kai tsaye na hawan zafin jiki na PCB shine saboda kasancewar na'urori masu rarraba wutar lantarki, na'urorin lantarki suna da digiri daban-daban na lalata wutar lantarki, kuma ƙarfin dumama ya bambanta da wutar lantarki.

2 abubuwan mamaki na hauhawar zafin jiki a PCB:

(1) hawan zafin jiki na gida ko babban yanayin zafi;

(2) Hawan zafin jiki na ɗan gajeren lokaci ko na dogon lokaci.

A cikin nazarin ikon PCB na thermal, ana nazarin abubuwan gabaɗaya masu zuwa:

1. Amfanin wutar lantarki

(1) nazarin yawan wutar lantarki a kowane yanki na yanki;

(2) bincika rarraba wutar lantarki akan PCB.

2. Tsarin PCB

(1) girman PCB;

(2) kayan.

3. Shigar da PCB

(1) Hanyar shigarwa (kamar shigarwa na tsaye da shigarwa a kwance);

(2) yanayin rufewa da nisa daga gidaje.

4. Thermal radiation

(1) radiation coefficient na PCB surface;

(2) bambancin zafin jiki tsakanin PCB da saman da ke kusa da su da cikakkiyar zafin jiki;

5. Gudanar da zafi

(1) shigar da radiator;

(2) gudanar da wasu tsarin shigarwa.

6. thermal convection

(1) convection na halitta;

(2) tilasta sanyaya convection.

Binciken PCB na abubuwan da ke sama hanya ce mai tasiri don magance hauhawar zafin jiki na PCB, sau da yawa a cikin samfuri da tsarin waɗannan abubuwan suna da alaƙa da dogaro, yawancin abubuwan yakamata a bincika su gwargwadon halin da ake ciki, kawai don takamaiman halin da ake ciki na iya zama ƙari. daidai ƙididdiga ko ƙididdige haɓakar zafin jiki da sigogin wuta.