67243-Cooling and Heating Load Calculation 67243-Kzwjs GÛ wnwUs

67243-Cooling and Heating Load Calculation 67243-Kzwjs GÛ wnwUs †jvW K vjKz‡jkb A.M. ATIQULLAH(Avey †gvnv § AvwZKzj v) INSTRUCTOR(TECH) RAC(BÝUªv i/AviGwm) DHAKA POLYTECHNIC INSTITUTE,TEJGAON Dhaka. [email protected] 01711056403 Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

-25(PC)- 25(PF)200(Total) MID: 24-31 gvP /20 BF t 01Ryb/2020 OBJECTIVES: To provide the students with an opportunity to acquire knowledge, skills and attitude in the area of cooling and heating load calculation with special emphasis on: Aspect of cooling and heating load. Aspect of building survey. External and internal heat load calculation. Refrigeration and air conditioning plant capacity. Selection of equipment Psychometric chart Solar heat gain calculation Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

SHORT DESCRIPTION welqe ‘y ms‡ÿ‡c tUnderstand the aspect of cooling and heating load, concept of psychometric chart, solar heat calculation, building survey, External and Internal cooling and heating load calculation, capacity of a refrigeration and air conditioning plant, Building load calculation and equipment selection. Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

Reference Books ‡idv‡iÝ eB mg n t 1.Basic Refrigeration and Air conditioning - P. N. Ananthanarayanan 2.Principal of Refrigeration - Roy J. Dossat 3.A text book of Refrigeration and Air-conditioning - R. S Khurmi & J K Gupta 4.A course in Refrigeration and air conditioning - S. C. Arora & S Domkundwar 5.Modern refrigeration and airconditioning for engineers - Prof. P S Desai 6.Refrigeration and air conditioning - C P Arora 7.Refrigeration and air conditioning - Ahmadul Ameen Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

Ask ïiæ-1g Presented By: A.M.Atiqullah : A.M.Atiqullah,INSTRUCTOR(Tech)RAC POLYTECHNIC INSTITUTE, M: Presented By INSTRUCTOR(Tech) RAC DHAKA DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka01711-056403 1208

DETAILS DESCRIPTON (Theory)/ZZ¡xq : 1. Understand the aspect of cooling and heating load 1.1 State the different heat transmission and load calculations terms (Cooling Load Temperature Difference (CLTD), Sensible Heat Gain, Latent Heat Gain, Radiant Heat Gain, Space Heat Gain, Space Cooling Load, Space Heat Extraction Rate, and Thermal Resistance). 1.2 State the meaning of cooling and heating load. 1.3 Describe constant and variable loads. 1.4 State the meaning of K, C, R and U factors. 1.5 Solve problems relating to K, C, R and U factors. Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

aspect heating of cooling and load Kzwjs Ges wnwUs †jv‡Wi wewfbœ i c m ú‡K aviYv S.O:1.1 State the different heat transmission and load calculations terms (Cooling Load Temperature Difference (CLTD), Sensible Heat Gain, Latent Heat Gain, Radiant Heat Gain, Space Heat Gain, Space Cooling Load, Space Heat Extraction Rate, and Thermal Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A DhakaResistance). 1208

Kzwjs GÛ wnwUs †jvW K vjKz‡jkb S.O:1.1 State the different heat transmission and load calculations terms (Cooling Load Temperature Difference (CLTD), Sensible Heat Gain, Latent Heat Gain, Radiant Heat Gain, Space Heat Gain, Space Cooling Load, Space Heat Extraction Rate, and Thermal Resistance). CLTD Sensible Heat Gain: (K) Kzwjs †jvW ZvcgvÎvi cv K (CLTD) n‡”Qt 1) † Iqvj Ges Qv‡ i ZvcgvÎvi cv K 2) Kzwjs †jvW d v i hv Drcbœ nq†mvjvi wnU Ges Af šÍixY Zv‡ci Drm Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

Q A U CLTD Q ‡ Iqvj ev KvP I Qv n‡Z cÖvß Zvc (W) A ‡ Iqvj, Qv‡ I I †g‡Si †ÿÎdj 2 (m ) U Zvc mÂvj‡bi mvwe K Yv¼ (KW/m2 0k) CLTD ZvcgvÎvi cv K (oC) Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

S.O:1.1.1.Sensible Heat Gain (Aby‡gq Zvc AR b) CLTD Sensible Heat Gain: (L) Aby‡gq Zvc AR b t hLb ‡Kvb wbqwšÍZ ’v‡b ev K‡ÿ mivmwi Zvc †hvM nq Zv‡K Aby‡gq Zvc AR b e‡j MÖx §Kvjxb mg‡q Gwm † úª‡m GB Aby‡gq Zvc AcmviY Ki‡Z nq 1) †h cwigvb Zvc wewìs Gi yB cv‡k i ZvcgvÎvi cv ‡ K i Kvi‡Y Zvc cwienb cÖwµqvq Qv ,†g‡S,evB‡ii † Iqvj, iRv Ges Rvbvjvi gva ‡g mÂvwjZ n‡q wbqwš¿Z ’v‡bi Zvc e„w K‡i 2) ‡mŠi Zvc wewKiY n‡Z AwR Z Zvc t GUv yB ai‡bi nq h vPresented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka(K) Rvbvjvi KvP,‡fw›U‡jUi/ iRvi gva ‡g cÖZ ÿfv‡e 1208

S.O:1.1.2.Latent Heat Gain myßZvc AR b (M)myßZvc AR b(Latent Heat Gain)t hLb †Kvb wbqwšÍZ ’v‡bi evZv‡mi Rjxq ev ú †hvM nq ZLb Zv‡K myßZvc AR b e‡j wb‡ vœ³ Drm n‡Z myßZvc AwR Z nq1.wbqwšÍZ ’v‡bi ga Kvi cÖwµqv †hgb- Lv ªe ivbœv Kiv wbM Z Rjxq ev ú Nbxfe‡bi Kvi‡Y AwR Z Zvc 2.evZvm AbycÖ‡e‡ki gva ‡g wbqwšÍZ ’v‡b cÖweó evB‡ii evZv‡mi Av ª Zvi Kvi‡Y Zvc AR b 3. gvby‡li k vmcÖk v‡mi Kv‡R wbqwš¿Z Dcv vb cÖ‡qvRbxq ’v‡b evZvm mieiv‡ni Kvi‡Y AwR Z Zvc 4. Wbqwš¿Z ’v‡b Ae ’vbiZ gvby‡li kixi n‡Z wbM Z Rjxq ev ú Nbxfe‡bi Kvi‡Y AwR Z Zvc 5. evB‡I A ev ci úi msjMœ GjvKv † ‡K cÖ‡ek † Iqvj Ges cwU k‡bi gva ‡g wbqwš¿Z ’v‡b cÖZ ÿfv‡e cÖweó Rjxq ev‡ úi Kvi‡Y AwR Z Zvc Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

‡iwW‡q›U Zvc AR b (N)‡iwW‡q›U Zvc AR bt cvwicvwk K wewfbœ Dr‡mi †iwW‡qkb RwbZ Kvi‡Y cwiPj‡bi gva ‡g †h cwigvb Zvc K‡ÿ AwR Z ev Drcbœ nq, ZvnvB †iwW‡qkb RwbZ Heat Zvc Cooling load gain Heat extraction Variable heat storage Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

S.O:1.1.4.Space Heat Gain (‡ úm wnU ‡MBb †jvW) (O)‡ úm wnU ‡MBbt- †Kvb ’v‡bi g‡a wbw ó mg‡qi †fZ‡i †h cwigvb Zvc cª‡ek K‡i ev Drcbœ nq, Zv‡K ‡ úm wnU ‡MBb †jvW e‡j ‡ úm wnU ‡MBb †jvW DrcwËi Drm ‡jv n‡jv- 1. cvwicvwk K m h v‡jv‡Ki Kvi‡Y 2. † Iqvj I Qv KZ „K ewR Z Zv‡ci Kvi‡Y 3. K‡ÿi †fZ‡i e eü Q‡KU †jv‡Wi Kvi‡Y 4. †fw›U‡jkb I Bbwd‡ëªk‡bi Kvi‡Y 5. K‡ÿi †fZ‡i e eü BKzBc‡g›U †jv‡Wi Kvi‡Y Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A DhakaBZ vw 1208

S.O:1.1.5.Space Cooling Load (‡ úm Kzwjs †jvW) ‡ úm Kzwjs †jvW t- GKwU wbw ó mg‡qi g‡a †Kvb Ave ’v‡bi Aby‡gq I myßZvc eR ‡bi gva ‡g H ’v‡bi evZv‡mi ZvcgvÎv I Av ª Zv wbqš¿b K‡i Avivg vqvK cwi‡ek m„wó Kiv‡K ‡ úm Kzwjs Sourc †jvW e‡j Space e Cooling load Convection heat Heat Radiant storage heat Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

S.O:1.1.6.Space Heat Extraction Rate (Zvc wb ‹vk‡bi nvi) (Q) Zvc wb ‹vk‡bi nvi t- GKwU wbw ó mg‡qi g‡a †Kvb Ave ’v‡bi Af šÍ‡i Drcbœ Aby‡gq Zvc I myßZvc eR b K‡i wbqwš¿Z ’v‡bi evZv‡mi ZvcgvÎv I Av ª Zv wbw ó ivLvi c wZ‡K Zvc wb ‹vk‡bi nvi e‡j Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

Resistance ( vg vj †iwR vÝ) (R) vg vj †iwR vÝ t vg vj †iwR vÝ n‡jv e ‘yi Ggb GKwU ag , hv e ‘yi ga w ‡q Zvc cÖev‡n evav cÖ vb K‡i weÁvbx dzwiq i Gi myÎ g‡Z Q (K.A.TD)/x x/KA vg vj †iwR vÝ K e ‘i vg vj KÛvKwUwfwU Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

and heating load. Kzwjs GÛ wnwUs †jvW Gi A mg n t Kzwjs †jvW Gi A mg n t wngvqb hš¿ w ‡q †Kvb Ave ’vb kxZj K‡i AvKvw ÿZ(CwáZ) ZvcgvÎv eRvq ivLvi Rb †h cwigvb Zvc AcmviY Ki‡Z nq,ZvnvB Kzwjs †jvW wnwUs †jvW Gi A mg n t †Kvb Ave Presented By : A.M.Atiqullah,INSTRUCTOR(Tech)RAC DHAKA POLYTECHNIC INSTITUTE, M: Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208 01711-056403

constant and variable loads. w ’i I cwieZ bkxj †jvW mg n t 1.w ’i †jvW mg n t KvVv‡gvi gva ‡g Zvc mÂvj‡b †h cwigvb Zvc wewìs‡qi yB cv‡k i ZvcgvÎvi cv ‡Ki Kvi‡Y wewìs‡qi Qv ,‡g‡S,‡ qvj, iRv,Rvbvjvi gva ‡g mÂvwjZ Zvc mg n Presented By : A.M.Atiqullah,INSTRUCTOR(Tech)RAC DHAKA POLYTECHNIC INSTITUTE, M: 01711-056403 2.cwieZ bkxj †jvW mg n t Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208

meaning of K, C, R and U factors. K,C,U Ges R d v i mg n t K-d v i t- 1wgUvi c iæ Ges 1eM wgUvi cwimi(AvqZb)wewkó GKwUgvÎ DcKiY Øviv cÖ ‘yZ †Kvb e ‘yi yBZ‡ji ZvcgvÎvi cv K 1wWMÖx †Kjwfb n‡j Dnvi wfZi w ‡q IqvU GK‡K †h nv‡i Zvc cwievwnZ nq,ZvnvB K-d v i C-d v i t- wbw ó †e‡ai(cyiæ‡Z¡i) GK ev GKvwaK DcKi‡Yi mgš ‡q cÖ ‘yZ/‰Zix cÖwZ eM wgUvi †Kvb KvVv‡gvi ga w ‡q Zvc cwievwnZvi bv¼‡K C-d v i e‡j U-d v i t- wewfbœ DcKi‡Yi Íi Øviv ˆZix †Kvb GKwU Ave KvVv‡gvi ga w ‡q GK Z‡ji evZvm n‡Z Aci Z‡ji evZv‡m IqvU GK‡K †h cwigvb Zvc cÖwZ wWMÖx †Kjwfb ZvcgvÎvi e eav‡b cwievwnZ nq,Zv‡K U -d v i e‡j R-d v i t- Kv‡Pi wfZi w ‡q AwZµvšÍ m h iwk i Rb †h AwZwi³ Zvc Gwm iæ‡g mÂvwjZ nq, Zv‡KB wewKiYRwbZ Zvc Presented By: A.M.Atiqullah : A.M.Atiqullah,INSTRUCTOR(Tech)RAC POLYTECHNIC INSTITUTE, M: Presented By INSTRUCTOR(Tech) RAC DHAKA DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhakae‡j 1208 01711-056403

S.O:1.5 Solve problems relating to K, C, R and U factors. mgm vejx/AsK mg n t 1.Q AUTD, GLv‡b, Q cwievwnZ Zv‡ci cwigvb, IqvU(W) A KvVv‡gvi †ÿÎdj, eM GKK(m2) U Zvc cwievwnZvi bv¼,IqvU/eM wgUvi †Kjwfb( TD wfZi Ges evB‡ii ZvcgvÎvi e eavb †Kjwfb 2. R . 3. C , 4. X 5. U 6. Q Presented : A.M.Atiqullah,INSTRUCTOR(Tech)RAC DHAKA POLYTECHNIC INSTITUTE, M: Presented ByBy : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka01711-056403 1208

wW.‡m. ZvcgvÎvq 10 N›Up kxZj Kiv n‡j gvQ † ‡K AcmvwiZ Zv‡ci cwigvY wbY q Ki (kxZjxKi‡Yi mgq 15 N›Uv, gv‡Qi Avt Zvc 315 wK‡jv Ryj/‡KwR.wW.‡Kjwfb, wPwjs †iU d v i 0.68) DËit † Iqv Av‡Q, m 300 kg, c 315 kj/kg, Q ? Avgiv Rvwb, Q 115.81 Kw Presented By : A.M.Atiqullah,INSTRUCTOR(Tech)RAC DHAKA POLYTECHNIC INSTITUTE, M: Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka01711-056403 1208

ANY QUESTION ? Presented By: A.M.Atiqullah : A.M.Atiqullah,INSTRUCTOR(Tech)RAC DHAKA POLYTECHNIC INSTITUTE, M: Presented By INSTRUCTOR(Tech) RAC DHAKA POLYTECHNIC INSTITUTE,TEJGAON I/A Dhaka1208 01711-056403

evoxi KvR(Home Work) Aa vq-1g Gi cÖkœvejx t 1. msMv wjL t- K) Aby‡gq Zvc AR b L) myßZvc AR b M) ‡iwW‡q›U Zvc AR b N) ‡ úm wnU ‡MBb †jvW O) ‡ úm Kzwjs †jvW P) Zvc wb ‹vk‡bi nvi Q) vg vj †iwR vÝ R) Kzwjs GÛ wnwUs †jvW Gi A mg n 2. Kzwjs GÛ wnwUs †jvW ej‡Z Kx eySvq ? 3. w ’i I cwieZ bkxj †jvW mg n eY bv Ki ? 4. GKK mn K,C,U Ges R d v i mg ‡ni msMv wjL ? 5.6m 4m AvKv‡ii † qv‡ji evB‡ii evZv‡mi †eM N›Uvq 12 Km Ges † qvjwU 1.25 cm wm‡g›U cøv vi, 12.5 cm BU Ges 2.5 cm Presented By :ˆZix A.M.Atiqullah,INSTRUCTOR(Tech)RAC POLYTECHNIC INSTITUTE, M: KvV w ‡q n‡j † qv‡ji “U” d v i DHAKA Gi gvb KZ ? “K” d v i- 01711-056403

Thank you For All Presented By : A.M.Atiqullah INSTRUCTOR(Tech) RAC 24 01 FEBRUARY'2020

(e envwiK) 1. Study the thermal conductivity and thermal conductance chart/ table. 1.1 Find out the value of K of common brick, wood, cellular glass, corkboard, glass, expanded polyurethane, mineral wool etc from the chart. 1.2 Find out the C value of sand aggregate, cinder aggregate, tiles, plywood, and glass of different thickness. 1.3 Solve problems relating to conductance.

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