Optimization Method for Twin-Tunnel Complementary Ventilation Design and Its Energy Saving Effect

Table 4

Comparation of ventilation schemes in energy consumption.

Section		Original design			Redesign				Single U-type mode
		Air volume; (m^3/s)	Required; thrust; (Pa)	Gross power; (kW)	Length; (m)	Air volume; (m^3/s)	Required; thrust; (Pa)	Gross power; (kW)	Length; (m)	Air volume; (m^3/s)	Required; thrust; (Pa)	Gross power; (kW)
Uphill	1	377.42	222.38	30×10	2750	300	46.85	30×4	0	0	0	0
	2			0	1250	212	0.00	0	3300	312	6.51	30×1
	3			30×10	1700	336	29.90	30×3	2400	424	200.57	30×17
Downhill	4	285.9	0	0	2750	262	0.00	0	0	0	0	0
	5			0	1250	174	0.00	0	3300	207	0	0
	6			0	1464	298	0.00	0	2164	319	0	0
Channels	7	—	—	—	0	88	0.00	—	0	0	0	—
	8	—	—	—	0	124	52.40	150	0	112	0	0
Total		663.32	222.38	600	—	598	129.15	360	—	631	207.08	540