MVHR Design Calculations

	A	B	C	D	E	F	G	H	I	J	K	L	M	N
1	standard extract rates by room type			minimum high l/s		minimum low l/s
2	kitchen			13		0.3			litres per second to m3 per hour conversion factor 3.6
3	bathroom			8		0.3
4	utility			8		0.3
5	sanitary rm			6		0.3
6
7	whole house extract rate			0.3 l/s/m2
8
9	rooms	area m2	volume m3	BRegs min l/s (0.3)	BRegs min m3/h	BRegs high l/s	BRegs high m3/h	supply rate (adjusted) m3/h	extract rate (adjusted) m3/h	supply	extract
10	bedroom 1	30.00	60.00	9.00	32.40			58.21		yes
11	bedroom 2	25.00	44.00	7.50	27.00			48.51		yes
12	bedroom 3	21.00	38.00	6.30	22.68			40.75		yes
13	bedroom 4	9.00	21.00	2.70	9.72			17.46		yes
14	bathroom	7.00	17.00	2.10	7.56	8.00	28.80		52.42		yes
15	en suite	4.50	8.50	1.35	4.86	8.00	28.80		52.42		yes
16	kitchen	37.50	93.75	11.25	40.50	13.00	46.80		85.18		yes
17	utility	7.00	16.10	2.10	7.56	8.00	28.80		52.42		yes
18	sitting room	34.00	82.28	10.20	36.72			65.98		yes
19	playroom	23.00	52.90	6.90	24.84			44.63		yes
20	study	10.50	24.15	3.15	11.34			20.37		yes
21	shower room	4.00	9.20	1.20	4.32	8.00	28.80		52.42		yes
22	office (Jimmy)	10.50	24.15	3.15	11.34
23	guest room	16.00	36.80	4.80	17.28					yes
24	hallway grnd	22.00	50.60	6.60	23.76
25	hallway 1st	13.00	30.00	3.90	14.04
26	totals	274.00	608.43	82.20	295.92	45.00	162.00	295.92	294.84
27	total supply rooms	152.50
28
29
30	duct runs and calcs	AE55sc air speed constant = 1m/s per 19.6 m3/h
31	room/function	duct diameter/type	duct length m	# of ducts/units		#90 degree bends	valve adaptor	supply valve	extract valve	duct air speed at boost m/s	system pressure - ducts Pa/m @ peak rate	duct system pressure	bends	valves and vents
32	MVHR exterior intake	180mm	3	1		3
33	MVHR exterior extract	180mm	1.5	1		3
34	MVHR supply to manifold	180mm	1.5	1		3
35	MVHR extract from manifold	180mm	1.5	1		3
36	bedroom 1	AE55sc	7.5	1		3	1	wall		2.97
37	bedroom 2	AE55sc	4.5	1		1	1	wall		2.48
38	bedroom 3	AE55sc	6	1		1	1	wall		2.08
39	bedroom 4	AE55sc	7.5	1		2	1	floor		0.89
40	bathroom	AE55sc	7	1		3			wall	2.67
41	en suite	AE55sc	2	1		2			wall	2.67
42	kitchen	AE55sc	15	2		2	1		wall	2.17
43	utility	AE55sc	3	1		2			ceiling	2.67
44	sitting room	AE55sc	2	1		2	1	wall		3.37
45	living room	AE55sc	8	1		1	1	ceiling		2.28
46	study	AE55sc	6.5	1		1	1	ceiling		1.04
47	shower room	AE55sc	2.5	1		2	1		ceiling	2.67
48	distribution box			2
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